The com.ibm.CORBA.iiop.ClientDelegate class in IBM Java 1.4.2 before 1.4.2 SR13-FP18, 5.0 before 5.0 SR16-FP3, 6 before 6 SR14, 6.0.1 before 6.0.1 SR6, and 7 before 7 SR5 improperly exposes the invoke method of the java.lang.reflect.Method class, which allows remote attackers to call setSecurityManager and bypass a sandbox protection mechanism via vectors related to the AccessController doPrivileged block.