Microsoft is aware of a vulnerability that affects only Windows XP and Windows Server 2003. If you use Windows 2000, Windows Vista, or Windows 7, you are not affected.

If your computer is running Windows XP, visit this Microsoft Fix it page to fix this problem automatically.

Don't know what version you're running? If you're not using Windows XP, the Fix it page will display a message like the one below and that means that you don't need the update.

What is Microsoft Fix it? Microsoft Fix it is an online solution center designed to help you automatically diagnose and fix common computer problems.

How widespread is this problem? There have been limited reports that cybercriminals have exploited this vulnerability, but all of these exploits have since been taken down and we are not currently aware of anyone attempting to attack this issue. However, now that the vulnerability has been made public, we do anticipate that others might try to take advantage of it.

Where can I get more information? For the most current information about this security advisory, follow the Microsoft Security Response Center (MSRC) blog and Microsoft Security Response on Twitter.

For basic information on how to help protect your computer, see 4 steps to protect your computer.