Improper Access Control
The default configuration of IBM WebSphere Application Server (WAS) 7.0.0 before 18.104.22.168, 8.0.0 before 22.214.171.124, and 8.5 before 126.96.36.199 has a false value for the com.ibm.ws.webcontainer.disallowServeServletsByClassname WebContainer property, which allows remote attackers to obtain privileged access via unspecified vectors.
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.