A denial of service vulnerability exists in the way that Windows 7, Windows 8.1, Windows 10, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, and Windows Server 2016 handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding, aka "Windows Denial of Service Vulnerability."
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0191