The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft 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, 1607, and 1703, and Windows Server 2016 does not properly scan a specially crafted file leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability."
https://www.exploit-db.com/exploits/41975/
https://twitter.com/natashenka/status/861748397409058816
https://technet.microsoft.com/library/security/4022344
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0290
https://bugs.chromium.org/p/project-zero/issues/detail?id=1252
https://0patch.blogspot.si/2017/05/0patching-worst-windows-remote-code.html
http://www.securitytracker.com/id/1038420