Improper Access Control
Unspecified vulnerability in Oracle MySQL 5.6.27 and earlier and 5.7.9 allows remote authenticated users to affect availability via unknown vectors related to Optimizer.
CWE-284 - Improper Access Control
Listed 5th in the 'OWASP Top Ten', improper (or broken) access control attacks are a fundamental type of vulnerability. This includes a broad range of design flaws that enable users to act outside of their intended permissions. They can use these privileges to gain access to restricted files and functionality such as accessing restricted information, falsifying records, destroying data, or executing commands.