Security bulletin 03-045 [part of Windows Update] KB 824141
Microsoft Security Bulletin MS03-045:
http://www.microsoft.com/technet/security/Bulletin/MS03-045.mspx
A security issue has been identified that could allow an attacker to compromise a computer running Microsoft Windows and gain control over it. To attempt an attack, the attacker would have to be able to log on to the computer. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer
Reboot