Unspecified vulnerability in certain IBM Tivoli Storage Manager (TSM) clients 5.1 before 5.1.8.1, 5.2 before 5.2.5.2, 5.3 before 5.3.5.3, and 5.4 before 5.4.1.2, when using "server-initiated prompted scheduling," allows remote attackers to read a client's data, aka IC53616.