MS05-051 is not categorized as virus, worm, Trojan or backdoor. It is a group of critical vulnerabilities on Windows 2003/XP/2000 computers.
If exploited successfully, MS05-051 allows hackers to gain remote control of the affected computer with the same privileges as the logged on user, gain local elevation of privilege or launch denial of service (DoS) attacks.
These vulnerabilities are exploited in different ways depending on the operating system of the affected computer. For further information, refer to bulletin MS05-051 of Microsoft official website.
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.
Note: On October 14, 2005 Microsoft reported that some problems might occur after having installed this patch. Among these problems, the following are included:
- The Windows Installer service and/or the Windows Firewall service may not start.
- The Network Connections subfolder is empty.
- The Microsoft COM+ EventSystem service and COM+ applications may not start.
- Authenticated users cannot log on.
- A blank screen appears after the installation of the patch.
If your computer has any of these problems, click here for instructions on how to solve them.