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Products by Cisco Sorted by Most Security Vulnerabilities since 2018
Cisco Internetwork Operating System (IOS)148 vulnerabilities
Cisco Internetwork Operating System (IOS) is a family of network operating systems used on many Cisco Systems routers and current Cisco network switches.
Recent Cisco Security Advisories
| Advisory | Title | Published |
|---|---|---|
| 2025-06-18 | Cisco Meraki MX and Z Series AnyConnect VPN with Client Certificate Authentication Denial of Service Vulnerability | June 18, 2025 |
| 2025-06-18 | ClamAV UDF File Parsing Out-of-Bounds Read Information Disclosure Vulnerability | June 18, 2025 |
| 2025-06-04 | Cisco Identity Services Engine on Cloud Platforms Static Credential Vulnerability | June 4, 2025 |
| 2025-06-04 | Cisco Unified Intelligent Contact Management Enterprise Cross-Site Scripting Vulnerability | June 4, 2025 |
| 2025-06-04 | Cisco Integrated Management Controller Privilege Escalation Vulnerability | June 4, 2025 |
| 2025-06-04 | Cisco Unified Contact Center Express Vulnerabilities | June 4, 2025 |
| 2025-06-04 | Cisco Identity Services Engine Arbitrary File Upload Vulnerability | June 4, 2025 |
| 2025-06-04 | Cisco Unified Contact Center Express Editor Remote Code Execution Vulnerability | June 4, 2025 |
| 2025-06-04 | Cisco Customer Collaboration Platform Information Disclosure Vulnerability | June 4, 2025 |
| 2025-06-04 | Cisco Nexus Dashboard Fabric Controller SSH Host Key Validation Vulnerability | June 4, 2025 |
Known Exploited Cisco Vulnerabilities
The following Cisco vulnerabilities have recently been marked by CISA as Known to be Exploited by threat actors.
| Title | Description | Added |
|---|---|---|
| Cisco Smart Licensing Utility Static Credential Vulnerability |
Cisco Smart Licensing Utility contains a static credential vulnerability that allows an unauthenticated, remote attacker to log in to an affected system and gain administrative credentials. CVE-2024-20439 Exploit Probability: 88.9% |
March 31, 2025 |
| Cisco Small Business RV Series Routers Command Injection Vulnerability |
Multiple Cisco Small Business RV Series Routers contains a command injection vulnerability in the web-based management interface. Successful exploitation could allow an authenticated, remote attacker to gain root-level privileges and access unauthorized data. CVE-2023-20118 Exploit Probability: 3.5% |
March 3, 2025 |
| Cisco Adaptive Security Appliance (ASA) Cross-Site Scripting (XSS) Vulnerability |
Cisco Adaptive Security Appliance (ASA) contains a cross-site scripting (XSS) vulnerability in the WebVPN login page. This vulnerability allows remote attackers to inject arbitrary web script or HTML via an unspecified parameter. CVE-2014-2120 Exploit Probability: 80.1% |
November 12, 2024 |
| Cisco ASA and FTD Denial-of-Service Vulnerability |
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a missing release of resource after effective lifetime vulnerability that could allow an unauthenticated, remote attacker to cause a denial-of-service (DoS) of the RAVPN service. CVE-2024-20481 Exploit Probability: 2.1% |
October 24, 2024 |
| Cisco NX-OS Command Injection Vulnerability |
Cisco NX-OS contains a command injection vulnerability in the command line interface (CLI) that could allow an authenticated, local attacker to execute commands as root on the underlying operating system of an affected device. CVE-2024-20399 Exploit Probability: 0.1% |
July 2, 2024 |
| Cisco ASA and FTD Denial of Service Vulnerability |
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability that can lead to remote denial of service condition. CVE-2024-20353 Exploit Probability: 11.2% |
April 24, 2024 |
| Cisco ASA and FTD Privilege Escalation Vulnerability |
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a privilege escalation vulnerability that can allow local privilege escalation from Administrator to root. CVE-2024-20359 Exploit Probability: 0.1% |
April 24, 2024 |
| Cisco ASA and FTD Information Disclosure Vulnerability |
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an information disclosure vulnerability. An attacker could retrieve memory contents on an affected device, which could lead to the disclosure of confidential information due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. This vulnerability affects only specific AnyConnect and WebVPN configurations. CVE-2020-3259 Exploit Probability: 54.3% |
February 15, 2024 |
| Cisco IOS XE Web UI Unspecified Vulnerability |
Cisco IOS XE contains an unspecified vulnerability in the web user interface. When chained with CVE-2023-20198, the attacker can leverage the new local user to elevate privilege to root and write the implant to the file system. Cisco identified CVE-2023-20273 as the vulnerability exploited to deploy the implant. CVE-2021-1435, previously associated with the exploitation events, is no longer believed to be related to this activity. CVE-2023-20273 Exploit Probability: 92.7% |
October 23, 2023 |
| Cisco IOS XE Web UI Command Injection Vulnerability |
Cisco IOS XE contains a command injection vulnerability in the web user interface that could allow a remote, authenticated attacker to inject commands that can be executed as the root user. CVE-2021-1435 Exploit Probability: 0.4% |
October 19, 2023 |
| Cisco IOS XE Web UI Privilege Escalation Vulnerability |
Cisco IOS XE Web UI contains a privilege escalation vulnerability in the web user interface that could allow a remote, unauthenticated attacker to create an account with privilege level 15 access. The attacker can then use that account to gain control of the affected device. CVE-2023-20198 Exploit Probability: 94.1% |
October 16, 2023 |
| Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability |
Cisco IOS and IOS XE contain an out-of-bounds write vulnerability in the Group Encrypted Transport VPN (GET VPN) feature that could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute malicious code or cause a device to crash. CVE-2023-20109 Exploit Probability: 0.9% |
October 10, 2023 |
| Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability |
Cisco Adaptive Security Appliance and Firepower Threat Defense contain an unauthorized access vulnerability that could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or establish a clientless SSL VPN session with an unauthorized user. CVE-2023-20269 Exploit Probability: 0.3% |
September 13, 2023 |
| Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability |
Cisco IOS, IOS XR, and IOS XE contain insufficient condition checks in the part of the code that handles Internet Key Exchange version 1 (IKEv1) security negotiation requests. contains an information disclosure vulnerability in the Internet Key Exchange version 1 (IKEv1) that could allow an attacker to retrieve memory contents. Successful exploitation could allow the attacker to retrieve memory contents, which can lead to information disclosure. CVE-2016-6415 Exploit Probability: 93.0% |
May 19, 2023 |
| Cisco IOS Denial-of-Service Vulnerability |
Cisco IOS contains an unspecified vulnerability that may block further telnet, reverse telnet, Remote Shell (RSH), Secure Shell (SSH), and in some cases, Hypertext Transport Protocol (HTTP) access to the Cisco device. CVE-2004-1464 Exploit Probability: 1.3% |
May 19, 2023 |
| Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability |
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. CVE-2017-6742 Exploit Probability: 5.6% |
April 19, 2023 |
| Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability |
Cisco AnyConnect Secure Mobility Client for Windows interprocess communication (IPC) channel allows for insufficient validation of resources that are loaded by the application at run time. An attacker with valid credentials on Windows could execute code on the affected machine with SYSTEM privileges. CVE-2020-3433 Exploit Probability: 6.3% |
October 24, 2022 |
| Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability |
Cisco AnyConnect Secure Mobility Client for Windows allows for incorrect handling of directory paths. An attacker with valid credentials on Windows would be able to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. CVE-2020-3153 Exploit Probability: 43.5% |
October 24, 2022 |
| Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability |
A deserialization of untrusted data vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an attacker to execute code with root privileges. CVE-2019-15271 Exploit Probability: 13.2% |
June 8, 2022 |
| Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability |
A buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) code of Cisco ASA software could allow an attacker to cause a reload of the affected system or to remotely execute code. CVE-2016-6366 Exploit Probability: 91.8% |
May 24, 2022 |
Of the known exploited vulnerabilities above, 6 are in the top 1%, or the 99th percentile of the EPSS exploit probability rankings. 2 known exploited Cisco vulnerabilities are in the top 5% (95th percentile or greater) of the EPSS exploit probability rankings.
Top 10 Riskiest Cisco Vulnerabilities
Based on the current exploit probability, these Cisco vulnerabilities are on CISA's Known Exploited vulnerabilities list (KEV) and are ranked by the current EPSS exploit probability.
| Rank | CVE | EPSS | Vulnerability |
|---|---|---|---|
| 1 | CVE-2020-3452 | 94.5% | Cisco Adaptive Security Appliance and Cisco Fire Power Threat Defense directory traversal sensitive |
| 2 | CVE-2018-0296 | 94.4% | Cisco Adaptive Security Appliance Firepower Threat Defense Denial-of-Service/Directory Traversal vul |
| 3 | CVE-2021-1497 | 94.4% | Cisco HyperFlex HX Command Injection Vulnerabilities |
| 4 | CVE-2019-1653 | 94.4% | Cisco RV320 and RV325 Routers Improper Access Control Vulnerability (COVID-19-CTI list) |
| 5 | CVE-2023-20198 | 94.1% | Cisco IOS XE Web UI Privilege Escalation Vulnerability |
| 6 | CVE-2017-3881 | 94.1% | Cisco IOS and IOS XE Remote Code Execution Vulnerability |
| 7 | CVE-2021-1498 | 94.1% | Cisco HyperFlex HX Command Injection Vulnerabilities |
| 8 | CVE-2020-3580 | 93.2% | Cisco ASA and FTD XSS Vulnerabilities |
| 9 | CVE-2016-6415 | 93.0% | Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability |
| 10 | CVE-2023-20273 | 92.7% | Cisco IOS XE Web UI Unspecified Vulnerability |
By the Year
In 2025 there have been 118 vulnerabilities in Cisco with an average score of 6.4 out of ten. Last year, in 2024 Cisco had 343 security vulnerabilities published. Right now, Cisco is on track to have less security vulnerabilities in 2025 than it did last year. Last year, the average CVE base score was greater by 0.36
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2025 | 118 | 6.36 |
| 2024 | 343 | 6.72 |
| 2023 | 270 | 6.86 |
| 2022 | 323 | 6.89 |
| 2021 | 541 | 6.83 |
| 2020 | 334 | 6.86 |
| 2019 | 360 | 6.92 |
| 2018 | 364 | 7.22 |
It may take a day or so for new Cisco vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Cisco Security Vulnerabilities
A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could
CVE-2025-20271
8.6 - High
- June 18, 2025
A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the Cisco AnyConnect service on an affected device. This vulnerability is due to variable initialization errors when an SSL VPN session is established. An attacker could exploit this vulnerability by sending a sequence of crafted HTTPS requests to an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to restart, resulting in the failure of all established SSL VPN sessions and forcing remote users to initiate a new VPN connection and re-authenticate. A sustained attack could prevent new SSL VPN connections from being established, effectively making the Cisco AnyConnect VPN service unavailable for all legitimate users.
Use of Uninitialized Variable
A vulnerability in Universal Disk Format (UDF) processing of ClamAV could
CVE-2025-20234
5.3 - Medium
- June 18, 2025
A vulnerability in Universal Disk Format (UDF) processing of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the .
Out-of-bounds Read
A vulnerability in the web-based management interface of Cisco Unified Intelligent Contact Management Enterprise could
CVE-2025-20273
6.1 - Medium
- June 04, 2025
A vulnerability in the web-based management interface of Cisco Unified Intelligent Contact Management Enterprise could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. This vulnerability is due to insufficient user input validation. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
XSS
A vulnerability in the API of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could
CVE-2025-20130
4.9 - Medium
- June 04, 2025
A vulnerability in the API of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker with administrative privileges to upload files to an affected device. This vulnerability is due to improper validation of the file copy function. An attacker could exploit this vulnerability by sending a crafted file upload request to a specific API endpoint. A successful exploit could allow the attacker to upload arbitrary files to an affected system.
Authorization
A vulnerability in the SSH implementation of Cisco Nexus Dashboard Fabric Controller (NDFC) could
CVE-2025-20163
8.7 - High
- June 04, 2025
A vulnerability in the SSH implementation of Cisco Nexus Dashboard Fabric Controller (NDFC) could allow an unauthenticated, remote attacker to impersonate Cisco NDFC-managed devices. This vulnerability is due to insufficient SSH host key validation. An attacker could exploit this vulnerability by performing a machine-in-the-middle attack on SSH connections to Cisco NDFC-managed devices, which could allow an attacker to intercept this traffic. A successful exploit could allow the attacker to impersonate a managed device and capture user credentials.
Key Exchange without Entity Authentication
Multiple vulnerabilities in the update process of Cisco ThousandEyes Endpoint Agent for Windows could
CVE-2025-20259
5.3 - Medium
- June 04, 2025
Multiple vulnerabilities in the update process of Cisco ThousandEyes Endpoint Agent for Windows could allow an authenticated, local attacker to delete arbitrary files on an affected device. These vulnerabilities are due to improper access controls on files that are in the local file system. An attacker could exploit these vulnerabilities by using a symbolic link to perform an agent upgrade that redirects the delete operation of any protected file. A successful exploit could allow the attacker to delete arbitrary files from the file system of the affected device.
Directory traversal
A vulnerability in the file opening process of Cisco Unified Contact Center Express (Unified CCX) Editor could
CVE-2025-20275
5.3 - Medium
- June 04, 2025
A vulnerability in the file opening process of Cisco Unified Contact Center Express (Unified CCX) Editor could allow an unauthenticated attacker to execute arbitrary code on an affected device. This vulnerability is due to insecure deserialization of Java objects by the affected software. An attacker could exploit this vulnerability by persuading an authenticated, local user to open a crafted .aef file. A successful exploit could allow the attacker to execute arbitrary code on the host that is running the editor application with the privileges of the user who launched it.
Marshaling, Unmarshaling
A vulnerability in the web-based management interface of Cisco Unified CCX could
CVE-2025-20279
4.8 - Medium
- June 04, 2025
A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to conduct a stored XSS attack on an affected system. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper sanitization of user input to the web-based management interface. An attacker could exploit this vulnerability by submitting a malicious script through the interface. A successful exploit could allow the attacker to conduct a stored XSS attack on the affected system.
XSS
A vulnerability in the web-based management interface of Cisco Unified CCX could
CVE-2025-20277
3.4 - Low
- June 04, 2025
A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper limitation of a pathname to a restricted directory (path traversal). An attacker could exploit this vulnerability by sending a crafted web request to an affected device, followed by a specific command through an SSH session. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.
Directory traversal
A vulnerability in the web-based management interface of Cisco Unified CCX could
CVE-2025-20276
3.8 - Low
- June 04, 2025
A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insecure deserialization of Java objects by the affected software. An attacker could exploit this vulnerability by sending a crafted Java object to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.
Marshaling, Unmarshaling
A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could
CVE-2025-20261
8.8 - High
- June 04, 2025
A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges. This vulnerability is due to insufficient restrictions on access to internal services. An attacker with a valid user account could exploit this vulnerability by using crafted syntax when connecting to the Cisco IMC of an affected device through SSH. A successful exploit could allow the attacker to access internal services with elevated privileges, which may allow unauthorized modifications to the system, including the possibility of creating new administrator accounts on the affected device.
Improper Restriction of Communication Channel to Intended Endpoints
A vulnerability in the CLI of multiple Cisco Unified Communications products could
CVE-2025-20278
6 - Medium
- June 04, 2025
A vulnerability in the CLI of multiple Cisco Unified Communications products could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system of an affected device as the root user. This vulnerability is due to improper validation of user-supplied command arguments. An attacker could exploit this vulnerability by executing crafted commands on the CLI of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of an affected device as the root user. To exploit this vulnerability, the attacker must have valid administrative credentials.
Command Injection
A vulnerability in the web-based chat interface of Cisco Customer Collaboration Platform (CCP), formerly Cisco SocialMiner, could
CVE-2025-20129
4.3 - Medium
- June 04, 2025
A vulnerability in the web-based chat interface of Cisco Customer Collaboration Platform (CCP), formerly Cisco SocialMiner, could allow an unauthenticated, remote attacker to persuade users to disclose sensitive data. This vulnerability is due to improper sanitization of HTTP requests that are sent to the web-based chat interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to the chat interface of a targeted user on a vulnerable server. A successful exploit could allow the attacker to redirect chat traffic to a server that is under their control, resulting in sensitive information being redirected to the attacker.
Information Disclosure
A vulnerability in Amazon Web Services (AWS), Microsoft Azure, and Oracle Cloud Infrastructure (OCI) cloud deployments of Cisco Identity Services Engine (ISE) could
CVE-2025-20286
9.9 - Critical
- June 04, 2025
A vulnerability in Amazon Web Services (AWS), Microsoft Azure, and Oracle Cloud Infrastructure (OCI) cloud deployments of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to access sensitive data, execute limited administrative operations, modify system configurations, or disrupt services within the impacted systems. This vulnerability exists because credentials are improperly generated when Cisco ISE is being deployed on cloud platforms, resulting in different Cisco ISE deployments sharing the same credentials. These credentials are shared across multiple Cisco ISE deployments as long as the software release and cloud platform are the same. An attacker could exploit this vulnerability by extracting the user credentials from Cisco ISE that is deployed in the cloud and then using them to access Cisco ISE that is deployed in other cloud environments through unsecured ports. A successful exploit could allow the attacker to access sensitive data, execute limited administrative operations, modify system configurations, or disrupt services within the impacted systems. Note: If the Primary Administration node is deployed in the cloud, then Cisco ISE is affected by this vulnerability. If the Primary Administration node is on-premises, then it is not affected.
Use of Hard-coded Password
A vulnerability in multiple Cisco Unified Communications and Contact Center Solutions products could
CVE-2025-20112
5.1 - Medium
- May 21, 2025
A vulnerability in multiple Cisco Unified Communications and Contact Center Solutions products could allow an authenticated, local attacker to elevate privileges to root on an affected device. This vulnerability is due to excessive permissions that have been assigned to system commands. An attacker could exploit this vulnerability by executing crafted commands on the underlying operating system. A successful exploit could allow the attacker to escape the restricted shell and gain root privileges on the underlying operating system of an affected device. To successfully exploit this vulnerability, an attacker would need administrative access to the ESXi hypervisor.
Privilege Chaining
A vulnerability in the API of Cisco Unified Intelligence Center could
CVE-2025-20114
4.3 - Medium
- May 21, 2025
A vulnerability in the API of Cisco Unified Intelligence Center could allow an authenticated, remote attacker to perform a horizontal privilege escalation attack on an affected system. This vulnerability is due to insufficient validation of user-supplied parameters in API requests. An attacker could exploit this vulnerability by submitting crafted API requests to an affected system to execute an insecure direct object reference attack. A successful exploit could allow the attacker to access specific data that is associated with different users on the affected system.
Insecure Direct Object Reference / IDOR
A vulnerability in Cisco Unified Intelligence Center could
CVE-2025-20113
7.1 - High
- May 21, 2025
A vulnerability in Cisco Unified Intelligence Center could allow an authenticated, remote attacker to elevate privileges to Administrator for a limited set of functions on an affected system. This vulnerability is due to insufficient server-side validation of user-supplied parameters in API or HTTP requests. An attacker could exploit this vulnerability by submitting a crafted API or HTTP request to an affected system. A successful exploit could allow the attacker to access, modify, or delete data beyond the sphere of their intended access level, including obtaining potentially sensitive information stored in the system.
Client-Side Enforcement of Server-Side Security
A vulnerability in the self-service portal of Cisco Duo could allow an unauthenticated, remote attacker to inject arbitrary commands into emails
CVE-2025-20258
5.4 - Medium
- May 21, 2025
A vulnerability in the self-service portal of Cisco Duo could allow an unauthenticated, remote attacker to inject arbitrary commands into emails that are sent by the service. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by injecting arbitrary commands into a portion of an email that is sent by the service. A successful exploit could allow the attacker to send emails that contain malicious content to unsuspecting users.
Command Injection
A vulnerability in the RADIUS message processing feature of Cisco Identity Services Engine (ISE) could
CVE-2025-20152
8.6 - High
- May 21, 2025
A vulnerability in the RADIUS message processing feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this vulnerability by sending a specific authentication request to a network access device (NAD) that uses Cisco ISE for authentication, authorization, and accounting (AAA). A successful exploit could allow the attacker to cause Cisco ISE to reload.
Out-of-bounds Read
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could
CVE-2025-20267
4.8 - Medium
- May 21, 2025
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid administrative credentials.
Basic XSS
A vulnerability in an API subsystem of Cisco Secure Network Analytics Manager and Cisco Secure Network Analytics Virtual Manager could allow an authenticated, remote attacker with low privileges to generate fraudulent findings
CVE-2025-20257
6.5 - Medium
- May 21, 2025
A vulnerability in an API subsystem of Cisco Secure Network Analytics Manager and Cisco Secure Network Analytics Virtual Manager could allow an authenticated, remote attacker with low privileges to generate fraudulent findings that are used to generate alarms and alerts on an affected product. Thi vulnerability is due to insufficient authorization enforcement on a specific API. An attacker could exploit this vulnerability by authenticating as a low-privileged user and performing API calls with crafted input. A successful exploit could allow the attacker to obfuscate legitimate findings in analytics reports or create false indications with alarms and alerts on an affected device.
AuthZ
A vulnerability in the web-based management interface of Cisco Secure Network Analytics Manager and Cisco Secure Network Analytics Virtual Manager could
CVE-2025-20256
6.5 - Medium
- May 21, 2025
A vulnerability in the web-based management interface of Cisco Secure Network Analytics Manager and Cisco Secure Network Analytics Virtual Manager could allow an authenticated, remote attacker with valid administrative credentials to execute arbitrary commands as root on the underlying operating system. This vulnerability is due to insufficient input validation in specific fields of the web-based management interface. An attacker with valid administrative credentials could exploit this vulnerability by sending crafted input to an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with root privileges.
Injection
A vulnerability in client join services of Cisco Webex Meetings could
CVE-2025-20255
4.3 - Medium
- May 21, 2025
A vulnerability in client join services of Cisco Webex Meetings could allow an unauthenticated, remote attacker to manipulate cached HTTP responses within the meeting join service. This vulnerability is due to improper handling of malicious HTTP requests to the affected service. An attacker could exploit this vulnerability by manipulating stored HTTP responses within the service, also known as HTTP cache poisoning. A successful exploit could allow the attacker to cause the Webex Meetings service to return incorrect HTTP responses to clients.
Acceptance of Extraneous Untrusted Data With Trusted Data
A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack
CVE-2025-20250
6.1 - Medium
- May 21, 2025
A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. A vulnerability is due to improper filtering of user-supplied input. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to conduct a cross-site scripting attack against the targeted user.
XSS
A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack
CVE-2025-20247
6.1 - Medium
- May 21, 2025
A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. A vulnerability is due to improper filtering of user-supplied input. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to conduct a cross-site scripting attack against the targeted user.
XSS
A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack
CVE-2025-20246
6.1 - Medium
- May 21, 2025
A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. A vulnerability is due to improper filtering of user-supplied input. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to conduct a cross-site scripting attack against the targeted user.
XSS
A vulnerability in the Cloud Connect component of Cisco Unified Contact Center Enterprise (CCE) could
CVE-2025-20242
6.5 - Medium
- May 21, 2025
A vulnerability in the Cloud Connect component of Cisco Unified Contact Center Enterprise (CCE) could allow an unauthenticated, remote attacker to read and modify data on an affected device. This vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending crafted TCP data to a specific port on an affected device. A successful exploit could allow the attacker to read or modify data on the affected device.
Authorization
A vulnerability in the CLI of Cisco IOS XE Software could
CVE-2025-20201
6.7 - Medium
- May 07, 2025
A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with privilege level 15 to elevate privileges to root on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation when processing specific configuration commands. An attacker could exploit this vulnerability by including crafted input in specific configuration commands. A successful exploit could allow the attacker to elevate privileges to root on the underlying operating system of an affected device. The security impact rating (SIR) of this advisory has been raised to High because an attacker could gain access to the underlying operating system of the affected device and perform potentially undetected actions. Note: The attacker must have privileges to enter configuration mode on the affected device. This is usually referred to as privilege level 15.
Improper Check for Unusual or Exceptional Conditions
A vulnerability in the Cisco Express Forwarding functionality of Cisco IOS XE Software for Cisco ASR 903 Aggregation Services Routers with Route Switch Processor 3 (RSP3C) could
CVE-2025-20189
7.4 - High
- May 07, 2025
A vulnerability in the Cisco Express Forwarding functionality of Cisco IOS XE Software for Cisco ASR 903 Aggregation Services Routers with Route Switch Processor 3 (RSP3C) could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper memory management when Cisco IOS XE Software is processing Address Resolution Protocol (ARP) messages. An attacker could exploit this vulnerability by sending crafted ARP messages at a high rate over a period of time to an affected device. A successful exploit could allow the attacker to exhaust system resources, which eventually triggers a reload of the active route switch processor (RSP). If a redundant RSP is not present, the router reloads.
Mismatched Memory Management Routines
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could
CVE-2025-20140
7.4 - High
- May 07, 2025
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need to authenticate to the network, or associate freely in the case of a configured open network. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to stop responding, resulting in a DoS condition.
Stack Exhaustion
A vulnerability in the Out-of-Band Access Point (AP) Image Download, the Clean Air Spectral Recording, and the client debug bundles features of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could
CVE-2025-20188
10 - Critical
- May 07, 2025
A vulnerability in the Out-of-Band Access Point (AP) Image Download, the Clean Air Spectral Recording, and the client debug bundles features of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, remote attacker to upload arbitrary files to an affected system. This vulnerability is due to the presence of a hard-coded JSON Web Token (JWT) on an affected system. An attacker could exploit this vulnerability by sending crafted HTTPS requests to the AP file upload interface. A successful exploit could allow the attacker to upload files, perform path traversal, and execute arbitrary commands with root privileges.
Use of Hard-coded Credentials
A vulnerability in the web-based management interface of Cisco IOS XE Software could
CVE-2025-20193
6.5 - Medium
- May 07, 2025
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, low-privileged, remote attacker to perform an injection attack against an affected device.r This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface. A successful exploit could allow the attacker to read files from the underlying operating system.
Shell injection
A vulnerability in the web-based management interface of Cisco IOS XE Software could
CVE-2025-20194
5.4 - Medium
- May 07, 2025
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, low-privileged, remote attacker to perform an injection attack against an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface. A successful exploit could allow the attacker to read limited files from the underlying operating system or clear the syslog and licensing logs on the affected device.
Shell injection
A vulnerability in the web-based management interface of Cisco IOS XE Software could
CVE-2025-20195
4.3 - Medium
- May 07, 2025
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a CSRF attack and execute commands on the CLI of an affected device. This vulnerability is due to insufficient CSRF protections for the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading an already authenticated user to follow a crafted link. A successful exploit could allow the attacker to clear the syslog, parser, and licensing logs on the affected device if the targeted user has privileges to clear those logs.
Session Riding
A vulnerability in the web-based management interface of the Wireless LAN Controller feature of Cisco IOS XE Software could
CVE-2025-20186
8.8 - High
- May 07, 2025
A vulnerability in the web-based management interface of the Wireless LAN Controller feature of Cisco IOS XE Software could allow an authenticated, remote attacker with a lobby ambassador user account to perform a command injection attack against an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary Cisco IOS XE Software CLI commands with privilege level 15. Note: This vulnerability is exploitable only if the attacker obtains the credentials for a lobby ambassador account. This account is not configured by default.
Shell injection
A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could
CVE-2025-20147
5.4 - Medium
- May 07, 2025
A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an authenticated, remote attacker to conduct a stored cross-site scripting attack (XSS) on an affected system. This vulnerability is due to improper sanitization of user input to the web-based management interface. An attacker could exploit this vulnerability by submitting a malicious script through the interface. A successful exploit could allow the attacker to conduct a stored XSS attack on the affected system.
XSS
A vulnerability in the web interface of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could
CVE-2025-20216
4.7 - Medium
- May 07, 2025
A vulnerability in the web interface of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an unauthenticated, remote attacker to inject HTML into the browser of an authenticated user. This vulnerability is due to improper sanitization of input to the web interface. An attacker could exploit this vulnerability by convincing an authenticated user to click a malicious link. A successful exploit could allow the attacker to inject HTML into the browser of an authenticated Cisco Catalyst SD-WAN Manager user.
Injection
A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could
CVE-2025-20154
8.6 - High
- May 07, 2025
A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. For Cisco IOS XR Software, this vulnerability could cause the ipsla_ippm_server process to reload unexpectedly if debugs are enabled. This vulnerability is due to out-of-bounds array access when processing specially crafted TWAMP control packets. An attacker could exploit this vulnerability by sending crafted TWAMP control packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: For Cisco IOS XR Software, only the ipsla_ippm_server process reloads unexpectedly and only when debugs are enabled. The vulnerability details for Cisco IOS XR Software are as follows: Security Impact Rating (SIR): Low CVSS Base Score: 3.7 CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Improper Input Validation
A vulnerability in the implementation of the Simple Network Management Protocol Version 3 (SNMPv3) feature of Cisco IOS Software and Cisco IOS XE Software could
CVE-2025-20151
4.3 - Medium
- May 07, 2025
A vulnerability in the implementation of the Simple Network Management Protocol Version 3 (SNMPv3) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to poll an affected device using SNMP, even if the device is configured to deny SNMP traffic from an unauthorized source or the SNMPv3 username is removed from the configuration. This vulnerability exists because of the way that the SNMPv3 configuration is stored in the Cisco IOS Software and Cisco IOS XE Software startup configuration. An attacker could exploit this vulnerability by polling an affected device from a source address that should have been denied. A successful exploit could allow the attacker to perform SNMP operations from a source that should be denied. Note: The attacker has no control of the SNMPv3 configuration. To exploit this vulnerability, the attacker must have valid SNMPv3 user credentials. For more information, see the section of this advisory.
Configuration
A vulnerability in the packet filtering features of Cisco IOS XE SD-WAN Software could
CVE-2025-20221
5.3 - Medium
- May 07, 2025
A vulnerability in the packet filtering features of Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to bypass Layer 3 and Layer 4 traffic filters. This vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by sending a crafted packet to the affected device. A successful exploit could allow the attacker to bypass the Layer 3 and Layer 4 traffic filters and inject a crafted packet into the network.
Information Disclosure
A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could
CVE-2025-20191
7.4 - High
- May 07, 2025
A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Buffer Access with Incorrect Length Value
A vulnerability in the application data endpoints of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could
CVE-2025-20187
6.5 - Medium
- May 07, 2025
A vulnerability in the application data endpoints of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an authenticated, remote attacker to write arbitrary files to an affected system. This vulnerability is due to improper validation of requests to APIs. An attacker could exploit this vulnerability by sending malicious requests to an API within the affected system. A successful exploit could allow the attacker to conduct directory traversal attacks and write files to an arbitrary location on the affected system.
Directory traversal
A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could
CVE-2025-20122
7.8 - High
- May 07, 2025
A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an authenticated, local attacker to gain privileges of the root user on the underlying operating system. This vulnerability is due to insufficient input validation. An authenticated attacker with read-only privileges on the SD-WAN Manager system could exploit this vulnerability by sending a crafted request to the CLI of the SD-WAN Manager. A successful exploit could allow the attacker to gain root privileges on the underlying operating system.
Man-in-the-Middle / MITM
A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could
CVE-2025-20213
5.5 - Medium
- May 07, 2025
A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an authenticated, local attacker to overwrite arbitrary files on the local file system of an affected device. To exploit this vulnerability, the attacker must have valid read-only credentials with CLI access on the affected system. This vulnerability is due to improper access controls on files that are on the local file system. An attacker could exploit this vulnerability by running a series of crafted commands on the local file system of an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device and gain privileges of the root user. To exploit this vulnerability, an attacker would need to have CLI access as a low-privilege user.
Shell injection
A vulnerability in the Network Configuration Access Control Module (NACM) of Cisco IOS XE Software could
CVE-2025-20214
4.3 - Medium
- May 07, 2025
A vulnerability in the Network Configuration Access Control Module (NACM) of Cisco IOS XE Software could allow an authenticated, remote attacker to obtain unauthorized read access to configuration or operational data. This vulnerability exists because a subtle change in inner API call behavior causes results to be filtered incorrectly. An attacker could exploit this vulnerability by using either NETCONF, RESTCONF, or gRPC Network Management Interface (gNMI) protocols and query data on paths that may have been denied by the NACM configuration. A successful exploit could allow the attacker to access data that should have been restricted according to the NACM configuration. Note: This vulnerability requires that the attacker obtain the credentials from a valid user with privileges lower than 15, and that NACM was configured to provide restricted read access for that user.
Insecure Direct Object Reference / IDOR
A vulnerability in the lobby ambassador web interface of Cisco IOS XE Wireless Controller Software could allow an authenticated, remote attacker to remove arbitrary users
CVE-2025-20190
6.5 - Medium
- May 07, 2025
A vulnerability in the lobby ambassador web interface of Cisco IOS XE Wireless Controller Software could allow an authenticated, remote attacker to remove arbitrary users that are defined on an affected device. This vulnerability is due to insufficient access control of actions executed by lobby ambassador users. An attacker could exploit this vulnerability by logging in to an affected device with a lobby ambassador user account and sending crafted HTTP requests to the API. A successful exploit could allow the attacker to delete arbitrary user accounts on the device, including users with administrative privileges. Note: This vulnerability is exploitable only if the attacker obtains the credentials for a lobby ambassador account. This account is not configured by default.
Authorization
A vulnerability in the management API of Cisco Catalyst Center, formerly Cisco DNA Center, could
CVE-2025-20210
7.3 - High
- May 07, 2025
A vulnerability in the management API of Cisco Catalyst Center, formerly Cisco DNA Center, could allow an unauthenticated, remote attacker to read and modify the outgoing proxy configuration settings. This vulnerability is due to the lack of authentication in an API endpoint. An attacker could exploit this vulnerability by sending a request to the affected API of a Catalyst Center device. A successful exploit could allow the attacker to view or modify the outgoing proxy configuration, which could disrupt internet traffic from Cisco Catalyst Center or may allow the attacker to intercept outbound internet traffic.
Missing Authentication for Critical Function
A vulnerability in Cisco IOS XE Wireless Controller Software could
CVE-2025-20202
7.4 - High
- May 07, 2025
A vulnerability in Cisco IOS XE Wireless Controller Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of access point (AP) Cisco Discovery Protocol (CDP) neighbor reports when they are processed by the wireless controller. An attacker could exploit this vulnerability by sending a crafted CDP packet to an AP. A successful exploit could allow the attacker to cause an unexpected reload of the wireless controller that is managing the AP, resulting in a DoS condition that affects the wireless network.
Buffer Access with Incorrect Length Value
A vulnerability in Cisco Catalyst Center, formerly Cisco DNA Center, could allow an authenticated, remote attacker to read and modify data in a repository
CVE-2025-20223
4.7 - Medium
- May 07, 2025
A vulnerability in Cisco Catalyst Center, formerly Cisco DNA Center, could allow an authenticated, remote attacker to read and modify data in a repository that belongs to an internal service of an affected device. This vulnerability is due to insufficient enforcement of access control on HTTP requests. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected device. A successful exploit could allow the attacker to read and modify data that is handled by an internal service on the affected device.
Authorization
A vulnerability in the Cisco Industrial Ethernet Switch Device Manager (DM) of Cisco IOS Software could
CVE-2025-20164
8.3 - High
- May 07, 2025
A vulnerability in the Cisco Industrial Ethernet Switch Device Manager (DM) of Cisco IOS Software could allow an authenticated, remote attacker to elevate privileges. This vulnerability is due to insufficient validation of authorizations for authenticated users. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to elevate privileges to privilege level 15. To exploit this vulnerability, the attacker must have valid credentials for a user account with privilege level 5 or higher. Read-only DM users are assigned privilege level 5.
AuthZ