CVE-2025-50079

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.42, 8.4.0-8.4.5 and 9.0.0-9.3.0. Easily exploitable 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

A vulnerability was found in the MySQL Server Optimizer. A high-privileged attacker with network access via multiple protocols could exploit this flaw to cause a hang or frequently repeatable crash, resulting in a complete denial of service of MySQL Server; confidentiality and integrity are not impacted. This issue affects the mysql components shipped in Red Hat Enterprise Linux 8, 9, and 10, where fixes are being pursued through Red Hat's delegated maintenance of MySQL packages, as well as the mysql packages in Fedora. MySQL in Red Hat Enterprise Linux 6 Extended Lifecycle Support is not affected because the vulnerable code is not present in that version. Red Hat rates this flaw as Moderate severity with a CVSS 3.1 base score of 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H), which is consistent with the upstream Oracle assessment.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.