The default configuration of IBM WebSphere Application Server (WAS) 7.0.0 before 7.0.0.39, 8.0.0 before 8.0.0.11, and 8.5 before 8.5.5.6 has a false value for the com.ibm.ws.webcontainer.disallowServeServletsByClassname WebContainer property, which allows remote attackers to obtain privileged access via unspecified vectors.