Heap-based buffer overflow in DirectPlay in DirectX 9.0 through 11.1 in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, Windows 8, and Windows Server 2012 allows remote attackers to execute arbitrary code via a crafted Office document, aka "DirectPlay Heap Overflow Vulnerability."