MS06-006 is not categorized as virus, worm, Trojan or backdoor. It is an important vulnerability in the Windows Media Player plug-in on Windows 2003/XP/2000 computers, which allows arbitrary code to be remotely executed in the vulnerable computer.
The Windows Media Player plug-in allows users to stream media through a browser different from Internet Explorer.
If exploited successfully, MS06-006 allows hackers to gain remote control of the affected computer with the same privileges as the logged on user. If this user had administrator rights, the hacker could take complete control of the system: create, modify or delete files, install programs, create new user accounts, etc.
This vulnerability is usually exploited by hosting a malicious EMBED element in a specially crafted web page and enticing users into accessing it. The EMBED element is the most common way of adding sounds to webpages.
If you have a Windows 2003/XP/2000 computer, it is recommendable to download and apply the security patch for this vulnerability. Click here to access the web page for downloading the patch.