Microsoft Security Bulletin (MS00-040) - Microsoft has released a patch for the "Remote Registry Access Authentication" vulnerability in Microsoft Windows NT 4.0. An authenticated user can send malformed data to a Remote Registry server, causing it to fail. Because the Remote Registry server is contained within the winlogon.exe system process on Windows NT 4.0, a failure in that process would cause the entire system to fail. Microsoft FAQ on this issue available here.
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