A reason to keep Windows Updated

Microsoft released a security update yesterday fixing a flaw in Window’s handling of TCP/IP that would allow malicious code to remotely executed through closed ports using special UDP packets.

Affected OSs include Vista, 7, and Server 2008. XP and Server 2003 were not affected by the flaw.

Source: https://technet.microsoft.com/en-us/security/bulletin/ms11-083