Today we released the following Security Bulletins:

Bulletin Summary:

http://www.microsoft.com/technet/security/Bulletin/ms05-Dec.mspx

Critical Bulletins:

Cumulative Security Update for Internet Explorer (905915)

http://www.microsoft.com/technet/security/Bulletin/ms05-054.mspx

Important Bulletins:

Vulnerability in Windows Kernel Could Allow Elevation of Privilege (908523)

http://www.microsoft.com/technet/security/Bulletin/ms05-055.mspx

Re-Released Bulletins:

Vulnerability in DirectShow Could Allow Remote Code Execution (904706)

http://www.microsoft.com/technet/security/Bulletin/ms05-050.mspx

If you haven't already done so, I recommend visiting Microsoft Update as soon as possible to get these software updates.