CVE-2025-21495: Oracle MySQL Enterprise Firewall

Medium severity, CVSS 4.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Vulnerability in the MySQL Enterprise Firewall product of Oracle MySQL (component: Firewall). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Enterprise Firewall. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Enterprise Firewall. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Affected products

• Oracle MySQL Enterprise Firewall: from 8.0.0, up to and including 8.0.40; from 8.4.0, up to and including 8.4.3; version 9.1.0 only

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