vCenter Server in VMware vCenter 4.0 before Update 3 and 4.1 before Update 1 allows local users to discover the SOAP session ID via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/67304
http://www.vmware.com/security/advisories/VMSA-2011-0008.html
http://www.securityfocus.com/bid/47742
http://securitytracker.com/id?1025502
http://lists.vmware.com/pipermail/security-announce/2011/000137.html