Download Security Update for Microsoft .NET Framework 4.5, .NET Framework 4.5.1, and .NET Framework 4.5.2 on Windows 8, Windows RT 8, and Windows Server 2012 R2 from Official Microsoft Download Center

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Security Update for Microsoft .NET Framework 4.5, .NET Framework 4.5.1, and .NET Framework 4.5.2 on Windows 8, Windows RT 8, and Windows Server 2012 R2

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A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it.