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How to obtain and install the update. Before installing this update. Prerequisite: To apply this update, you must have .NET Framework 4.5.2 installed. You must install the updates listed below and restart your device before installing the latest Rollup.

Applies to: Microsoft .NET Framework 4.5.2. This update is included in the Cumulative Update that is dated September 8, 2020. This update was previously released in the Cumulative Update that was dated August 11, 2020.

Resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when the .NET Framework processes untrusted input.

Summary. This security update for the Microsoft .NET Framework resolves a security feature bypass vulnerability in which the .NET Framework (and the .NET Core) components don't completely validate certificates. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0248.

Introduction. This August 2017 Update for Windows Server 2008 Service Pack 2 (SP2), Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2 SP1 includes cumulative reliability improvements in the .NET Framework 4.5.2. We recommend that you apply this update as part of your regular maintenance routines.

How to obtain and install the update. Before installing this update. Prerequisite: To apply this update, you must have .NET Framework 4.5.2 installed. You must install the updates listed below and restart your device before installing the latest Rollup.

Refunds for digital games include Microsoft Store digital game offers, Xbox apps (excluding movies and TV apps), digital gaming bundle offers, digital game durable content, and some digital game consumable content, whether made available through the Xbox console, on your PC, or on your mobile device.

This security update addresses the vulnerability by correcting how .NET Framework validates untrusted input. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8421.

Download information. The following files are available for download from the .NET Download Site: Download the Microsoft .NET Framework 4.8 offline installer package now. For more information about .NET Framework 4.8 offline installer, see .NET Framework 4.8 offline installer for Windows.