The TCP/IP-Stack of the Microsoft Windows XP/Vista Operating System is vulnerable to a remote resource exhaustion vulnerability. By taking advantage of this vulnerability, an attacker can cause a connection’s Transmission Control Block (TCB) to remain in memory for an indefinite amount of time without the need for the attacker to further maintain the connection’s activity.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/81158/CVE-2009-1926_MS09-048.txt
Source: https://packetstormsecurity.com/files/81158/Microsoft-TCP-IP-Orphaned-Connections.html