Multiple unspecified vulnerabilities in IBM WebSphere Application Server (WAS) before Fix Pack 21 (6.0.2.21) have unknown impact and attack vectors, aka (1) PK33799, or (2) a "Potential security exposure" in the Samples component (PK40213).
http://www.vupen.com/english/advisories/2007/2626
http://www.securitytracker.com/id?1018448
http://www-1.ibm.com/support/docview.wss?rs=180&uid=swg27006876