Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-10-20T21:22:46 mysql: mysql: Denial of Service via security encryption component 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-327

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

A flaw was found in the Security: Encryption component of MySQL. This issue may allow an attacker to impact the confidentiality, integrity, and/or availability of MySQL Server depending on the vulnerability details. Refer to the Oracle CPU advisory for component-specific impact.

This vulnerability is rated as having Moderate impact because, while a successful exploit can cause a complete denial of service by terminating or hanging the database daemon, exploitation requires high attack complexity and existing low-privileged authentication credentials. The security flaw is confined to availability without compromising data confidentiality or integrity. Typical Red Hat Enterprise Linux deployments isolate database services within private networks or restrict direct access to authorized application tiers, substantially limiting exposure to untrusted parties. Red Hat Enterprise Linux 10 Affected mysql8.4 Red Hat Enterprise Linux 6 Not affected mysql Red Hat Enterprise Linux 9 Affected mysql Red Hat Hardened Images Not affected mariadb10.11 Red Hat Hardened Images Not affected mariadb11.8 https://www.cve.org/CVERecord?id=CVE-2026-101762 https://nvd.nist.gov/vuln/detail/CVE-2026-101762 https://www.oracle.com/security-alerts/cpuoct2026.html