CVE-2025-50083

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 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 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

A moderate severity denial of service vulnerability was found in the MySQL Server Optimizer component of Oracle MySQL. A remote, low privileged attacker with network access via multiple protocols could exploit this flaw to cause the MySQL Server to hang or crash in a frequently repeatable manner, resulting in a complete denial of service of MySQL Server. Confidentiality and integrity are not impacted. The Red Hat impact rating of Moderate (CVSS 3.1 base score 6.5, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) is consistent with the upstream Oracle severity of 6.5.

Within Red Hat Enterprise Linux, the mysql, mysql:8.0, and mysql:8.4 components in RHEL 8, RHEL 9, and RHEL 10 are affected, and a fix is being pursued through the delegated maintenance process. MySQL in Red Hat Enterprise Linux 6 Extended Lifecycle Support is not affected because the vulnerable code is not present in that version. The delegated assessment for Red Hat In-Vehicle OS determined that its mysql component is not affected. For Fedora, the mysql8.0 and mysql8.4 packages are affected with the fix deferred for existing releases; until the deferred update ships, those releases retain the residual risk that a low privileged MySQL user can repeatedly hang or crash the server, impacting availability.

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.