Microsoft Net
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Recent Microsoft Net Security Advisories
| Advisory | Title | Published |
|---|---|---|
| CVE-2026-64530 | CVE-2026-64530 net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle | July 27, 2026 |
| CVE-2026-56163 | CVE-2026-56163 Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability | July 23, 2026 |
| CVE-2026-64188 | CVE-2026-64188 net: qualcomm: rmnet: fix endpoint use-after-free in rmnet_dellink() | July 22, 2026 |
| CVE-2026-64189 | CVE-2026-64189 netfilter: ipset: fix race between dump and ip_set_list resize | July 22, 2026 |
| CVE-2026-64190 | CVE-2026-64190 net: team: fix NULL pointer dereference in team_xmit during mode change | July 22, 2026 |
| CVE-2026-63978 | CVE-2026-63978 net/handshake: Drain pending requests at net namespace exit | July 21, 2026 |
| CVE-2026-63979 | CVE-2026-63979 net/handshake: hand off the pinned file reference to accept_doit | July 21, 2026 |
| CVE-2026-64060 | CVE-2026-64060 netfs: Fix leak of request in netfs_write_begin() error handling | July 21, 2026 |
| CVE-2026-64076 | CVE-2026-64076 netfilter: bridge: eb_tables: close module init race | July 21, 2026 |
| CVE-2026-63983 | CVE-2026-63983 net/sched: fix packet loop on netem when duplicate is on | July 21, 2026 |
By the Year
In 2026 there have been 41 vulnerabilities in Microsoft Net with an average score of 7.4 out of ten. Last year, in 2025 Net had 8 security vulnerabilities published. That is, 33 more vulnerabilities have already been reported in 2026 as compared to last year. However, the average CVE base score of the vulnerabilities in 2026 is greater by 0.06.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 41 | 7.40 |
| 2025 | 8 | 7.34 |
| 2024 | 20 | 7.57 |
| 2023 | 31 | 7.54 |
| 2022 | 11 | 7.12 |
| 2021 | 8 | 6.76 |
| 2020 | 4 | 5.00 |
It may take a day or so for new Net vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Net Security Vulnerabilities
Jul 2026: .NET Spoofing Vulnerability
CVE-2026-50659
6.5 - Medium
- July 14, 2026
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
Output Sanitization
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-50651
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: .NET Framework Elevation of Privilege Vulnerability
CVE-2026-50650
7.8 - High
- July 14, 2026
Improper control of generation of code ('code injection') in .NET Framework allows an unauthorized attacker to elevate privileges locally.
Code Injection
Jul 2026: .NET Remote Code Execution Vulnerability
CVE-2026-50649
7.8 - High
- July 14, 2026
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Marshaling, Unmarshaling
Jul 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-50648
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET Framework allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: .NET Framework Remote Code Execution Vulnerability
CVE-2026-50646
7.8 - High
- July 14, 2026
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Protection Mechanism Failure
Jul 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-50527
7.5 - High
- July 14, 2026
Stack-based buffer overflow in .NET Framework allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: .NET Security Feature Bypass Vulnerability
CVE-2026-50528
8.2 - High
- July 14, 2026
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
AuthZ
Jul 2026: .NET Tampering Vulnerability
CVE-2026-50526
7 - High
- July 14, 2026
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
insecure temporary file
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-50525
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-50524
7.5 - High
- July 14, 2026
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to deny service over a network.
Improper Validation of Specified Type of Input
Jul 2026: .NET Security Feature Bypass Vulnerability
CVE-2026-47304
8.1 - High
- July 14, 2026
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Improper Verification of Cryptographic Signature
Jul 2026: ASP.NET Core Elevation of Privilege Vulnerability
CVE-2026-47303
8.8 - High
- July 14, 2026
Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Authentication Bypass by Assumed-Immutable Data
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-47302
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: ASP.NET Core Elevation of Privilege Vulnerability
CVE-2026-47300
8.8 - High
- July 14, 2026
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Incorrect Implementation of Authentication Algorithm
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-57108
7.5 - High
- July 14, 2026
Access of resource using incompatible type ('type confusion') in .NET Core allows an unauthorized attacker to deny service over a network.
Object Type Confusion
Jul 2026: Active Directory Federation Server Denial of Service Vulnerability
CVE-2026-50647
7.5 - High
- July 14, 2026
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Infinite Loop
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50411
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50355
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50324
5.9 - Medium
- July 14, 2026
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Infinite Loop
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50368
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50304
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Azure Active Directory Denial of Service Vulnerability
CVE-2026-50653
7.5 - High
- July 14, 2026
Loop with unreachable exit condition ('infinite loop') in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Infinite Loop
Jul 2026: Azure Active Directory Denial of Service Vulnerability
CVE-2026-50652
7.5 - High
- July 14, 2026
Deserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Marshaling, Unmarshaling
Jul 2026: ASP.NET Core Denial of Service Vulnerability
CVE-2026-56170
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jun 2026: ASP.NET Core Denial of Service Vulnerability
CVE-2026-45591
7.5 - High
- June 09, 2026
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Resource Exhaustion
Jun 2026: .NET Tampering Vulnerability
CVE-2026-45491
6.2 - Medium
- June 09, 2026
Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.
insecure temporary file
Jun 2026: .NET SDK Elevation of Privilege Vulnerability
CVE-2026-45490
7.8 - High
- June 09, 2026
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
AuthZ
May 2026: ASP.NET Core Denial of Service Vulnerability
CVE-2026-42899
7.5 - High
- May 12, 2026
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Infinite Loop
May 2026: .NET Core Tampering Vulnerability
CVE-2026-32175
4.3 - Medium
- May 12, 2026
A tampering vulnerability exists when .NET Core improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could write arbitrary files and directories to certain locations on a vulnerable system. However, an attacker would have limited control over the destination of the files and directories. To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system. The security update fixes the vulnerability by ensuring .NET Core properly handles files.
Absolute Path Traversal
May 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-35433
7.3 - High
- May 12, 2026
Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.
Improper Input Validation
May 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-32177
7.3 - High
- May 12, 2026
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Apr 2026: .NET and Visual Studio Denial of Service Vulnerability
CVE-2026-32203
7.5 - High
- April 14, 2026
Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
Stack Overflow
Apr 2026: .NET Denial of Service Vulnerability
CVE-2026-26171
7.5 - High
- April 14, 2026
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
Resource Exhaustion
Apr 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-23666
7.5 - High
- April 14, 2026
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Improper Handling of Exceptional Conditions
Apr 2026: .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
CVE-2026-33116
7.5 - High
- April 14, 2026
Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.
Infinite Loop
Apr 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-32226
5.9 - Medium
- April 14, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.
Race Condition
Apr 2026: .NET Spoofing Vulnerability
CVE-2026-32178
7.5 - High
- April 14, 2026
Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.
Improper Neutralization of Special Elements
Mar 2026: .NET Denial of Service Vulnerability
CVE-2026-26127
7.5 - High
- March 10, 2026
Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.
Out-of-bounds Read
Mar 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-26131
7.8 - High
- March 10, 2026
Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.
Incorrect Default Permissions
Feb 2026: .NET Spoofing Vulnerability
CVE-2026-21218
7.5 - High
- February 10, 2026
Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.
Improper Handling of Missing Special Element
Oct 2025: .NET, .NET Framework, and Visual Studio Information Disclosure Vulnerability
CVE-2025-55248
4.8 - Medium
- October 14, 2025
Inadequate encryption strength in .NET, .NET Framework, Visual Studio allows an authorized attacker to disclose information over a network.
Inadequate Encryption Strength
Oct 2025: .NET Elevation of Privilege Vulnerability
CVE-2025-55247
7.3 - High
- October 14, 2025
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.
insecure temporary file
Jun 2025: .NET and Visual Studio Remote Code Execution Vulnerability
CVE-2025-30399
7.5 - High
- June 13, 2025
Untrusted search path in .NET and Visual Studio allows an unauthorized attacker to execute code over a network.
Untrusted Path
May 2025: .NET, Visual Studio, and Build Tools for Visual Studio Spoofing Vulnerability
CVE-2025-26646
8 - High
- May 13, 2025
External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an authorized attacker to perform spoofing over a network.
External Control of File Name or Path
Jan 2025: .NET and Visual Studio Remote Code Execution Vulnerability
CVE-2025-21172
7.5 - High
- January 14, 2025
.NET and Visual Studio Remote Code Execution Vulnerability
Integer Overflow or Wraparound
Jan 2025: .NET Remote Code Execution Vulnerability
CVE-2025-21171
7.5 - High
- January 14, 2025
.NET Remote Code Execution Vulnerability
Heap-based Buffer Overflow
Jan 2025: .NET Elevation of Privilege Vulnerability
CVE-2025-21173
7.3 - High
- January 14, 2025
.NET Elevation of Privilege Vulnerability
Creation of Temporary File in Directory with Insecure Permissions
Jan 2025: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability
CVE-2025-21176
8.8 - High
- January 14, 2025
.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability
Buffer Over-read
Oct 2024: .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
CVE-2024-43484
7.5 - High
- October 08, 2024
.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
Inefficient Algorithmic Complexity
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