CVE-2025-21494: Oracle MySQL Server

Medium severity, CVSS 4.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.0.39 and prior, 8.4.2 and prior and 9.0.1 and prior. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server executes 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 4.1 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Affected products

• Oracle MySQL Server: from 8.0.0, up to and including 8.0.39; from 8.4.0, up to and including 8.4.2; from 9.0.0, up to and including 9.0.1

Published 2025-01-21. Last modified 2026-06-17.