Who should read this document: Customers who are using Microsoft® Windows®
Impact of vulnerability: Remote Code Execution
Maximum Severity Rating: Critical
Recommendation: Systems administrators should apply the update immediately.
Security Update Replacement: None
Caveats: Windows NT 4.0 (Workstation, Server, and Terminal Server Edition) does not install the affected file by default. This file is installed as part of the MS03-041 Windows NT 4.0 security update and other possible non-security-related hotfixes. If the Windows NT 4.0 security update for MS03-041 is not installed, this may not be a required update. To verify if the affected file is installed, search for the file named Msasn1.dll. If this file is present, this security update is required. Windows Update, Software Update Services, and the Microsoft Security Baseline Analyzer will also correctly detect if this update is required.
Tested Software and Security Update Download Locations:
Affected Software:
Tested Microsoft Windows Components:
Affected Components: