This update resolves the "Authentication Flaw in Windows Debugger can Lead to Elevated Privileges" security vulnerability in Windows NT 4.0. This vulnerability is the result of a flaw in the authentication mechanism for the Windows debugging facility that can allow an unauthorized program to gain access to the debugger. Download now to help prevent a malicious user from gaining elevated privileges through the debugging facility, and then running code of his or her choice on your computer.

For more information about this issue, read the associated Microsoft Security Bulletin. (This site is in English.)