Virtual Hard Disk Driver in Windows 10 Gold, 1511, and 1607 and Windows Server 2016 does not properly restrict access to files, which allows local users to gain privileges via a crafted application, aka "VHD Driver Elevation of Privilege Vulnerability."
https://www.exploit-db.com/exploits/40763/
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-138