VI Client in VMware VirtualCenter before 2.5 Update 4, VMware ESXi 3.5 before Update 4, and VMware ESX 3.5 before Update 4 retains the VirtualCenter Server password in process memory, which might allow local users to obtain this password.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6376
http://www.vupen.com/english/advisories/2009/0944
http://www.vmware.com/security/advisories/VMSA-2009-0005.html
http://www.securityfocus.com/bid/34373
http://secunia.com/advisories/34585
http://seclists.org/fulldisclosure/2009/Apr/0036.html
http://lists.vmware.com/pipermail/security-announce/2009/000054.html