Applies to:

Microsoft .NET Framework 4.8

REMINDER

  • As a reminder to advanced IT administrators, updates to .NET Framework 3.5 for Windows Server 2012 R2 should only be applied on systems where .NET Framework 3.5 is present and enabled. Customers who attempt to pre-install updates to .NET Framework 3.5 to offline images that do not contain the .NET Framework 3.5 product enabled will expose these systems to failures to enable .NET Framework 3.5 after the systems are online. For more extensive information about deploying .NET Framework 3.5, see Microsoft .NET Framework 3.5 Deployment Considerations.

  • If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

The September 12, 2023 update for Windows Server 2012 R2 includes security improvements in .NET Framework 4.8. We recommend that you apply this update as part of your regular maintenance routines. Verify that you have installed the required updates listed in the How to get this update section before installing this update.

Summary

CVE-2023-36796 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in DiaSymReader.dll when reading a corrupted PDB file which can lead to Remote Code Execution. For more information see CVE 2023-36796.

CVE-2023-36792 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in DiaSymReader.dll when reading a corrupted PDB file which can lead to Remote Code Execution. For more information see CVE-2023-36792.

CVE-2023-36793 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in DiaSymReader.dll when reading a corrupted PDB file which can lead to Remote Code Execution. For more information see CVE-2023-36793.

CVE-2023-36794 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in DiaSymReader.dll when reading a corrupted PDB file which can lead to Remote Code Execution. For more information see CVE-2023-36794.

Additional information about this update

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

  • 5030175 Description of the Security Only Update for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 (KB5030175)

Known issues in this update

Microsoft is not currently aware of any issues in this update.

How to get this update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.8 installed.

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

No

See the other options below.

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 individual .NET Framework product update will be installed, as applicable, by applying the operating system update. For more information about operating system updates see additional information about this update section.

Restart requirement

You may need to 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.

Update deployment information

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

20230912 Security update deployment information: September 12, 2023

File Information

File hash information

File name

SHA256 hash

Windows8.1-KB5029942-x64-NDP48.msu

7624103E1C7B74C140D9913D1C50E0B49B08F7FCB811994A5F7C41F03FD21E7F

Windows8.1-KB5029942-x86-NDP48.msu

5FCD7503790E547E3CA1502932B03AAC56FC0EC77B65056F0846298A8C382778

File name

File version

File size

Date

Time

Platform

Diasymreader.dll

14.8.4667.0

1,494,920

26-Jul-2023

02:44

x64

Diasymreader.dll

14.8.4667.0

1,079,232

26-Jul-2023

02:42

x86

File name

File version

File size

Date

Time

Platform

Diasymreader.dll

14.8.4667.0

1,079,232

26-Jul-2023

02:42

x86

How to obtain help and support for this update

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