Microsoft has release update out of there ordinary cycle. According to Microsoft Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Remote Code Execution or Elevation of Privilege and it affects all platforms from windows xp sp3 to windows server 2012 and everything in between.
More Information
http://technet.microsoft.com/en-us/security/bulletin/ms12-078
More Information
http://technet.microsoft.com/en-us/security/bulletin/ms12-078