win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 Windows Server 2003 SP2 Windows Vista SP1 and SP2 Windows Server 2008 Gold SP2 R2 and R2 SP1 and Windows 7 Gold and SP1 on 64-bit platforms does not properly validate pointers during the parsing of OpenType (aka OTF) fonts which allows remote attackers to execute arbitrary code via a crafted font file aka \Win32k OTF Validation Vulnerability.\