This update resolves the "Service Control Manager Named Pipe Impersonation" security vulnerability in Windows 2000 and is discussed in Microsoft Security Bulletin MS00-053. Download now to help prevent a malicious user from creating or predicting pipes that allow impersonation of your specific user or LocalSystem privileges.

The Service Control Manager (SCM) is an administrative tool in Windows 2000 that allows system services like Server, Workstation, Alerter, ClipBook, and others to be created or modified. The SCM creates a named pipe for each service as it starts.

For more information about this vulnerability, read Microsoft Security Bulletin MS00-053. (This site is in English.)

• Windows 2000 Professional
• Windows 2000 Server
• Windows 2000 Advanced Server

1. Click the Start button, point to Settings, and then click Control Panel.
2. Double-click Add/Remove Programs.
3. Click Windows 2000 Hotfix (Pre-Sp2) [See Q269523 for more information] .
4. Click Change/Remove.