atmfd.dll in the Adobe Type Manager Library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 allows remote attackers to cause a denial of service (system crash) via a crafted OpenType font, aka "OpenType Font Parsing Vulnerability."