Microsoft Windows Vista SP2 Windows Server 2008 SP2 and R2 SP1 Windows 7 SP1 Windows 8.1 Windows Server 2012 Gold and R2 Windows RT 8.1 and Windows 10 Gold and 1511 mishandle LDAP authentication which allows man-in-the-middle attackers to gain privileges by modifying group-policy update data within a domain-controller data stream aka \Group Policy Elevation of Privilege Vulnerability.\