Unspecified vulnerability in the Server component in Oracle MySQL 5.1.66 and earlier and 5.5.28 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server Optimizer.
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server Optimizer). Supported versions that are affected are 5.1.66 and earlier and 5.5.28 and earlier. Easily exploitable vulnerability allows successful authenticated network attacks via multiple protocols. Successful attack of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server