HP OpenView Performance Insight Server 5.2, 5.3, 5.31, 5.4, and 5.41 contains a "hidden account" in the com.trinagy.security.XMLUserManager Java class, which allows remote attackers to execute arbitrary code via the doPost method in the com.trinagy.servlet.HelpManagerServlet class.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65038
http://www.zerodayinitiative.com/advisories/ZDI-11-034
http://www.vupen.com/english/advisories/2011/0258
http://www.securitytracker.com/id?1025014
http://www.securityfocus.com/bid/46079
http://www.securityfocus.com/archive/1/516093/100/0/threaded
http://www.exploit-db.com/exploits/16984
http://securityreason.com/securityalert/8136
http://secunia.com/advisories/43145
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02695453