Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow remote attackers to execute arbitrary code via a crafted Enhanced Metafile (EMF) image, aka "EMF Processing Remote Code Execution Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-035
http://www.securitytracker.com/id/1032110
http://www.securityfocus.com/archive/1/535272/100/0/threaded