CVE-2025-21499

Name of the Vulnerable Software and Affected Versions MySQL Server versions 8.4.3 and prior MySQL Server versions 9.1.0 and prior

Description The issue allows a high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server.

Recommendations For versions 8.4.3 and prior, update to a version later than 8.4.3 to resolve the issue. For versions 9.1.0 and prior, update to a version later than 9.1.0 to resolve the issue. As a temporary workaround, consider restricting network access to MySQL Server to minimize the risk of exploitation.