VMware released the following security updates. The first one is VMSA-2013-0012 which address multiple vulnerabilities in vCenter Server, vSphere Update Manager, ESXi and ESX. [1]
The second is VMSA-2013-0006.1 which address multiple vulnerabilities in vCenter Server Appliances and vCenter Server running on Windows. [2]
The last is VMSA-2013-0009.1 which address multiple vulnerabilities in vCenter Server, ESX and ESXi that updates third party libraries. [3]

[1] http://www.vmware.com/security/advisories/VMSA-2013-0012.html
[2] http://www.vmware.com/security/advisories/VMSA-2013-0006.html
[3] http://www.vmware.com/security/advisories/VMSA-2013-0009.html

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Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot edu