CVE-2026-21948

Name of the Vulnerable Software and Affected Versions Oracle MySQL versions 8.0.0 through 8.0.44 Oracle MySQL versions 8.4.0 through 8.4.7 Oracle MySQL versions 9.0.0 through 9.5.0

Description A flaw exists in the Optimizer component of the MySQL Server product. A highly privileged attacker with network access through multiple protocols can exploit this issue to cause a denial-of-service condition, leading to hangs or frequent crashes of the MySQL Server.

Recommendations Update Oracle MySQL to a version later than 8.0.44. Update Oracle MySQL to a version later than 8.4.7. Update Oracle MySQL to a version later than 9.5.0.