Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Compiling). Supported versions that are affected are 5.7.28 and prior. Difficult to exploit 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. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-093330 advisory.

    Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Compiling). Supported     versions that are affected are 5.7.28 and prior. Difficult to exploit 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. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector:
    (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

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

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: Compiling). Supported     versions that are affected are 5.7.28 and prior. Difficult to exploit 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-2020-2806)

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

The remote host is affected by the vulnerability described in GLSA-202105-27 (MySQL: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in MySQL. Please review       the CVE identifiers referenced below for details.
  Impact :

    An attacker could possibly execute arbitrary code with the privileges of       the process, escalate privileges, gain access to critical data or       complete access to all MySQL server accessible data, or cause a Denial of       Service condition.
  Workaround :

    There is no known workaround at this time.

Oracle reports :

This Critical Patch Update contains 45 new security patches for Oracle MySQL. 9 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials.

MariaDB reports 4 of these vulnerabilities exist in their software

The version of MySQL running on the remote host is 5.7.x prior to 5.7.29. It is, therefore, affected by multiple vulnerabilities, including three of the top vulnerabilities below, as noted in the January 2020 Critical Patch Update advisory:

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Compiling (cURL)). Supported   versions that are affected are 5.7.28 and prior and 8.0.18 and prior. Easily exploitable vulnerability allows   unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful   attacks of this vulnerability can result in takeover of MySQL Server (CVE-2019-5482).

  - Unspecified vulnerability in the optimizer component of Oracle MySQL Server. An authenticated, remote attacker   could exploit this issue, to compromise the availability of the application (CVE-2020-2579).

  - Unspecified vulnerabilities in the InnoDB component of Oracle MySQL Server. An authenticated, remote attacker   could exploit these issues, to compromise the availability of the application (CVE-2020-2577, CVE-2020-2589).

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
340286	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: mysql5 (UTSA-2026-093330)	Nessus	Unity Linux Local Security Checks	Local	medium
252465	Linux Distros Unpatched Vulnerability : CVE-2020-2806	Nessus	Misc.	Local	medium
156994	GLSA-202105-27 : MySQL: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	Local	high
135941	FreeBSD : MySQL Server -- Multiple vulerabilities (21d59ea3-8559-11ea-a5e2-d4c9ef517024)	Nessus	FreeBSD Local Security Checks	Local	critical
132957	MySQL 5.7.x < 5.7.29 Multiple Vulnerabilities (Jan 2020 CPU)	Nessus	Databases	Combined	critical

Detections

Analytics

CVE-2020-2806

medium

Tenable Plugins

medium

medium

high

critical

critical