Security Only Update for .NET Framework 4.5.2 for Windows Server 2012 (KB4578982)

Applies to:

Microsoft .NET Framework 4.5.2

An information disclosure vulnerability exists when the .NET Framework improperly handles objects in memory. An attacker who successfully exploited the vulnerability could disclose contents of an affected system's memory. To exploit the vulnerability, an authenticated attacker would need to run a specially crafted application. The update addresses the vulnerability by correcting how the .NET Framework handles objects in memory.

To learn more about the vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE).

The following articles contain additional information about this update as it relates to individual product versions.

  • 4580468 Description of the Security Only Update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB4580468)

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.5.2 installed.

Install this update

Release Channel

Available

Next Step

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product:Windows Server 2012

Classification: Security Updates

To apply this update, you must have .NET Framework 4.5.2 installed.

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

20201013 Security update deployment information: October 13, 2020

Note We do not recommend that you remove any security update. To remove this update, use the Programs and Features item in Control Panel.

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.


File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2012 file information

Note: The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

File name

SHA1 hash

SHA256 hash

Windows8-RT-KB4578982-x64.msu

12A3FFD5C46C77E199FA49B1E39880E01187F593

514D8930B70E41A998F5215938F4D8D6EF0E3FFCE72B50F07F8FD5511063554B

File name

File version

File size

Date

Time

Platform

System.security.dll

4.0.30319.36680

294,648

29-Aug-2020

13:09

x86

System.security.dll

4.0.30319.36680

294,648

29-Aug-2020

13:09

x86

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