Download .NET Framework 1.0 Service Pack 3 CLR Security Update for Windows XP Media Center Edition and Windows XP Tablet PC Edition from Official Microsoft Download Center

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.NET Framework 1.0 Service Pack 3 CLR Security Update for Windows XP Media Center Edition and Windows XP Tablet PC Edition

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A security issue has been identified that could allow an attacker to tamper with digitally signed content without being detected, when this content is being consumed by an application that makes uses of the Microsoft .NET Framework on a Windows-based system.