Detections
Analytics

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : MySQL vulnerabilities (USN-8457-1)

high Nessus Plugin ID 322263

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8457-1 advisory.

 It was discovered that MySQL Router incorrectly handled repeated TLS protocol upgrade requests. An unauthenticated remote attacker could possibly use this issue to cause MySQL Router to crash, resulting in a denial of service. (CVE-2026-46862)

 It was discovered that MySQL Server incorrectly handled connection authentication. An unauthenticated remote attacker could possibly use this issue to cause MySQL to crash, resulting in a denial of service.
 (CVE-2026-46863)

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

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8457-1

Plugin Details

Severity: High

ID: 322263

File Name: ubuntu_USN-8457-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/23/2026

Updated: 6/23/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-46863

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:mysql-server-core, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:mysql-client-8.0, p-cpe:/a:canonical:ubuntu_linux:mysql-client-core-8.0, p-cpe:/a:canonical:ubuntu_linux:mysql-server-core-8.0, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:mysql-server, p-cpe:/a:canonical:ubuntu_linux:mysql-testsuite, p-cpe:/a:canonical:ubuntu_linux:libmysqlclient21, p-cpe:/a:canonical:ubuntu_linux:mysql-router, p-cpe:/a:canonical:ubuntu_linux:mysql-client, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libmysqlclient-dev, p-cpe:/a:canonical:ubuntu_linux:mysql-client-core, p-cpe:/a:canonical:ubuntu_linux:mysql-server-8.0, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:mysql-source, p-cpe:/a:canonical:ubuntu_linux:mysql-source-8.0, p-cpe:/a:canonical:ubuntu_linux:libmysqlclient24, p-cpe:/a:canonical:ubuntu_linux:mysql-testsuite-8.0

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 6/22/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-46862, CVE-2026-46863

USN: 8457-1