Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges).
    Supported versions that are affected are 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit     vulnerability allows high privileged attacker with network access via multiple protocols to compromise     MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang     or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2025-21493)

Note that Nessus relies on the presence of the package as reported by the vendor.

The versions of MySQL Server installed on the remote host are affected by multiple vulnerabilities as referenced in the January 2025 CPU advisory.

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser).  Supported versions that are     affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability allows low     privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of     this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS)     of MySQL Server. (CVE-2025-21522)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability allows low     privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this     vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of     MySQL Server. (CVE-2025-21518)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability allows low     privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this     vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of     MySQL Server. (CVE-2025-21501)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The versions of MySQL Server installed on the remote host are affected by a vulnerability as referenced in the January 2024 CPU advisory.

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser).  Supported versions that are     affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability allows low     privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of     this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS)     of MySQL Server. (CVE-2025-21522)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability allows low     privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this     vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of     MySQL Server. (CVE-2025-21518)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that     are affected are 8.0.40 and prior, 8.4.3 and prior and  9.1.0 and prior. Easily exploitable vulnerability allows low     privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this     vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of     MySQL Server. (CVE-2025-21501)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
245720	Linux Distros Unpatched Vulnerability : CVE-2025-21493	Nessus	Misc.	Local	medium
214535	Oracle MySQL Server 9.x < 9.2.0 (January 2025 CPU)	Nessus	Databases	Combined	medium
214533	Oracle MySQL Server 8.x < 8.4.4 (January 2025 CPU)	Nessus	Databases	Combined	medium

Detections

Analytics

CVE-2025-21493

medium

Tenable Plugins

medium

medium

medium