Tenable Nessus Agent
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By the Year
In 2026 there have been 2 vulnerabilities in Tenable Nessus Agent with an average score of 7.5 out of ten. Last year, in 2025 Nessus Agent had 1 security vulnerability published. That is, 1 more vulnerability have already been reported in 2026 as compared to last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 2 | 7.45 |
| 2025 | 1 | 0.00 |
| 2024 | 2 | 0.00 |
| 2023 | 0 | 0.00 |
| 2022 | 0 | 0.00 |
| 2021 | 4 | 7.40 |
| 2020 | 0 | 0.00 |
| 2019 | 1 | 6.50 |
It may take a day or so for new Nessus Agent 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 Tenable Nessus Agent Security Vulnerabilities
Nessus Agent Weak File Perms Allow Unauthorized Access on Windows
CVE-2026-2026
6.1 - Medium
- February 13, 2026
A vulnerability has been identified where weak file permissions in the Nessus Agent directory on Windows hosts could allow unauthorized access, potentially permitting Denial of Service (DoS) attacks.
Incorrect Default Permissions
Privilege Escalation in Nessus Agent Tray App Windows install/uninstall
CVE-2025-36640
8.8 - High
- January 13, 2026
A vulnerability has been identified in the installation/uninstallation of the Nessus Agent Tray App on Windows Hosts which could lead to escalation of privileges.
Improper Privilege Management
LPE in Nessus Agent <10.8.3 on Windows via insecure non-default install
CVE-2025-24915
- March 21, 2025
When installing Nessus Agent to a non-default location on a Windows host, Nessus Agent versions prior to 10.8.3 did not enforce secure permissions for sub-directories. This could allow for local privilege escalation if users had not secured the directories in the non-default installation location.
Local Authenticated Race Condition in Windows Nessus Agent Allows Arbitrary Code Execution
CVE-2024-3292
- May 17, 2024
A race condition vulnerability exists where an authenticated, local attacker on a Windows Nessus Agent host could modify installation parameters at installation time, which could lead to the execution of arbitrary code on the Nessus host. - CVE-2024-3292
Nessus Agent <10.6.4 Windows LPE via insecure install path perms
CVE-2024-3291
- May 17, 2024
When installing Nessus Agent to a directory outside of the default location on a Windows host, Nessus Agent versions prior to 10.6.4 did not enforce secure permissions for sub-directories. This could allow for local privilege escalation if users had not secured the directories in the non-default installation location.
Nessus Agent 8.3.0 and earlier was found to contain a local privilege escalation vulnerability which could
CVE-2021-20118
- September 09, 2021
Nessus Agent 8.3.0 and earlier was found to contain a local privilege escalation vulnerability which could allow an authenticated, local administrator to run specific executables on the Nessus Agent host. This is different than CVE-2021-20117.
Nessus Agent 8.3.0 and earlier was found to contain a local privilege escalation vulnerability which could
CVE-2021-20117
- September 09, 2021
Nessus Agent 8.3.0 and earlier was found to contain a local privilege escalation vulnerability which could allow an authenticated, local administrator to run specific executables on the Nessus Agent host. This is different than CVE-2021-20118.
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain
CVE-2021-3450
7.4 - High
- March 25, 2021
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
Improper Certificate Validation
Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance
CVE-2021-20077
- March 19, 2021
Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance. This could allow a privileged attacker to obtain the token.
In SQLite through 3.29.0, whereLoopAddBtreeIndex in sqlite3.c can crash a browser or other application
CVE-2019-16168
6.5 - Medium
- September 09, 2019
In SQLite through 3.29.0, whereLoopAddBtreeIndex in sqlite3.c can crash a browser or other application because of missing validation of a sqlite_stat1 sz field, aka a "severe division by zero in the query planner."
Divide By Zero
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