Microsoft Windows 2000 SP4 XP SP2 and SP3 Server 2003 SP2 Vista Gold SP1 and SP2 and Server 2008 Gold and SP2 allow remote attackers to cause a denial of service (TCP outage) via a series of TCP sessions that have pending data and a (1) small or (2) zero receive window size and remain in the FIN-WAIT-1 or FIN-WAIT-2 state indefinitely aka \TCP/IP Orphaned Connections Vulnerability.\