Microsoft System Center Virtual Machine Manager (VMM) 2012 R2 Update Rollup 4 does not properly validate the roles of users, which allows local users to obtain server and virtual-machine administrative privileges by establishing a server session with Active Directory credentials, aka "Virtual Machine Manager Elevation of Privilege Vulnerability."
https://exchange.xforce.ibmcloud.com/vulnerabilities/100428
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-017
http://www.securitytracker.com/id/1034652