IBM WebSphere Portal 5.1 through 6.1.0.0 allows remote attackers to bypass authentication and obtain administrative access via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44264
http://www.vupen.com/english/advisories/2008/2405
http://www.securitytracker.com/id?1020712
http://www.securityfocus.com/bid/30500