Integer overflow in the Embedded OpenType (EOT) Font Engine (t2embed.dll) in Microsoft Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code via compressed data that represents a crafted EOT font, aka "Microtype Express Compressed Fonts Integer Flaw in the LZCOMP Decompressor Vulnerability."