The TCP implementation 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 and Windows RT Gold and 8.1 allows remote attackers to cause a denial of service (non-paged pool memory consumption and system hang) via malformed data in the Options field of a TCP header aka \TCP Denial of Service Vulnerability.\