CVE-2015-4800: Oracle MySQL

Medium severity, CVSS 4.0. EPSS: 2.3% chance of exploitation in the next 30 days.

Unspecified vulnerability in Oracle MySQL Server 5.6.26 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server : Optimizer.

Affected products

• Oracle MySQL: up to and including 5.6.26
• Red Hat Enterprise Linux: version 6.0 only; version 7.0 only

Published 2015-10-21. Last modified 2026-06-17.