Security bulletin 03-043 [part of Windows Update] KB 828035
Microsoft Security Bulletin MS03-043:
http://www.microsoft.com/technet/security/Bulletin/MS03-043.mspx
A security issue has been identified that could allow an attacker to remotely compromise a computer running Microsoft® Windows® Server 2003
and gain complete control over it. 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