IBM WebSphere Application Server (WAS) 6.1 before 6.1.0.45, 7.0 before 7.0.0.25, 8.0 before 8.0.0.5, and 8.5 before 8.5.0.1 on z/OS, in certain configurations involving Federated Repositories for IIOP connections and Optimized Local Adapters, does not perform CBIND checks, which allows local users to bypass intended access restrictions, and read or modify application data, via unspecified vectors.