The Graphics Component in the kernel-mode drivers in Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allows local users to gain privileges via a crafted application or in Windows 7 for x64-based Systems and later, cause denial of service, aka "Win32k Elevation of Privilege Vulnerability."
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0246