The kernel API in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, and Windows Server 2012 mishandles registry objects in memory, which allows local users to gain privileges via a crafted application, aka "Windows Registry Elevation of Privilege Vulnerability."
https://www.exploit-db.com/exploits/41645/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0103