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."
https://www.exploit-db.com/exploits/40219/
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-072