Applies To.NET

Applies to:

Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2

Note: Revised on Jun 20, 2023 to add resolution to known issue.

REMINDER

  • As a reminder to advanced IT administrators, updates to .NET Framework 3.5 for Windows Embedded 8.1 and 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 February 14, 2023 update for Windows Embedded 8.1 and Windows Server 2012 R2 includes cumulative reliability improvements in .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2. 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-2023-21808 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in the MSDIA SDK where an untrusted pointer dereference can cause memory corruption, leading to a crash or remove code execution. For more information please see CVE-2023-21808.

CVE-2023-21722 - .NET Framework Denial of Service Vulnerability This security update addresses a vulnerability where the Visual Studio WMI Setup Provider Installer can be used by a low level, local attacker to corrupt local files that SYSTEM can writ to, leading to a potential denial of service. For more information please see CVE-2023-21722.

Additional information about this update

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

  • 5022785 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 Embedded 8.1 and Windows Server 2012 R2 (KB5022785)

Known issues in this update

Symptom

After installing this update, WPF apps may have a change in behavior. For more information about this issue, see KB5022083

Workaround

To mitigate this issue, see KB5022083.

Resolution

This issue has been resolved in the June 13, 2023 Security and Quality Rollup and Cumulative Update.

If you used any workaround or mitigations for this issue, they are no longer needed, and we recommend you remove them. To remove workaround review the workaround or alternative workaround which was applied for instructions. The workaround should be removed prior to installing the June update.

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 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 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:

20230214 Security update deployment information: February 14, 2023

Update removal information

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

Update restart information

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

File hash information

File name

SHA256 hash

Windows8.1-KB5022524-x64.msu

4799E195AB660B13B007B61C820573B4BEFC8EB6BBC35D5E6DD3B35520F22344

Windows8.1-KB5022524-arm.msu

C6E13771553563F0CB49DE11AEBD2A1CB62E496CC30BAE7270F49B6C2E003853

Windows8.1-KB5022524-x86.msu

A51EFDD247BBC08F9D59BA5068973BC7A55B9BBECCD028E90C67D460D31FD69C

File name

File version

File size

Date

Time

Platform

Mscorlib.dll

4.7.4038.0

5,421,456

14-Dec-2022

08:17

x64

Normidna.nlp

Not applicable

59,342

26-Jul-2022

00:17

Not applicable

Normnfc.nlp

Not applicable

47,076

26-Jul-2022

00:17

Not applicable

Normnfd.nlp

Not applicable

40,566

26-Jul-2022

00:17

Not applicable

Normnfkc.nlp

Not applicable

67,808

26-Jul-2022

00:17

Not applicable

Normnfkd.nlp

Not applicable

61,718

26-Jul-2022

00:17

Not applicable

Clrjit.dll

4.7.4038.0

1,215,424

14-Dec-2022

08:17

x64

Clr.dll

4.7.4038.0

10,691,008

14-Dec-2022

08:17

x64

Compatjit.dll

4.7.4038.0

1,253,792

14-Dec-2022

08:17

x64

Diasymreader.dll

14.7.4038.0

1,445,776

14-Dec-2022

08:17

x64

Mscordacwks.dll

4.7.4038.0

1,834,384

14-Dec-2022

08:17

x64

Mscordbi.dll

4.7.4038.0

1,615,744

14-Dec-2022

08:17

x64

Mscorlib.ni.dll

4.7.4038.0

22,620,976

14-Dec-2022

08:21

x64

Msvcp120_clr0400.dll

12.0.52519.0

690,008

01-Apr-2022

07:12

x64

Msvcr120_clr0400.dll

12.0.52519.0

993,632

01-Apr-2022

07:12

x64

Peverify.dll

4.7.4038.0

254,912

14-Dec-2022

08:17

x64

Sos.dll

4.7.4038.0

865,664

14-Dec-2022

08:17

x64

Mscorlib.dll

4.7.4038.0

5,639,568

14-Dec-2022

08:21

x86

Normidna.nlp

Not applicable

59,342

26-Jul-2022

00:17

Not applicable

Normnfc.nlp

Not applicable

47,076

26-Jul-2022

00:17

Not applicable

Normnfd.nlp

Not applicable

40,566

26-Jul-2022

00:17

Not applicable

Normnfkc.nlp

Not applicable

67,808

26-Jul-2022

00:17

Not applicable

Normnfkd.nlp

Not applicable

61,718

26-Jul-2022

00:17

Not applicable

Clrjit.dll

4.7.4038.0

517,008

14-Dec-2022

08:21

x86

Clr.dll

4.7.4038.0

7,773,584

14-Dec-2022

08:21

x86

Diasymreader.dll

14.7.4038.0

1,064,896

14-Dec-2022

08:21

x86

Mscordacwks.dll

4.7.4038.0

1,336,752

14-Dec-2022

08:21

x86

Mscordbi.dll

4.7.4038.0

1,162,672

14-Dec-2022

08:21

x86

Mscorlib.ni.dll

4.7.4038.0

20,547,376

14-Dec-2022

08:21

x86

Msvcp120_clr0400.dll

12.0.52519.0

485,576

01-Apr-2022

03:58

x86

Msvcr120_clr0400.dll

12.0.52519.0

987,840

01-Apr-2022

03:58

x86

Peverify.dll

4.7.4038.0

182,672

14-Dec-2022

08:21

x86

Sos.dll

4.7.4038.0

737,200

14-Dec-2022

08:21

x86

File name

File version

File size

Date

Time

Platform

Mscorlib.dll

4.7.4038.0

5,648,712

14-Dec-2022

08:13

Not applicable

Normidna.nlp

Not applicable

59,342

26-Jul-2022

00:17

Not applicable

Normnfc.nlp

Not applicable

47,076

26-Jul-2022

00:17

Not applicable

Normnfd.nlp

Not applicable

40,566

26-Jul-2022

00:17

Not applicable

Normnfkc.nlp

Not applicable

67,808

26-Jul-2022

00:17

Not applicable

Normnfkd.nlp

Not applicable

61,718

26-Jul-2022

00:17

Not applicable

Clrjit.dll

4.7.4038.0

687,976

14-Dec-2022

08:13

Not applicable

Clr.dll

4.7.4038.0

7,193,960

14-Dec-2022

08:13

Not applicable

Diasymreader.dll

12.0.52242.36242

794,064

01-Apr-2022

07:12

Not applicable

Mscordacwks.dll

4.7.4038.0

1,288,592

14-Dec-2022

08:13

Not applicable

Mscordbi.dll

4.7.4038.0

1,123,728

14-Dec-2022

08:13

Not applicable

Mscorlib.ni.dll

4.7.4038.0

20,737,328

14-Dec-2022

08:21

Not applicable

Msvcp120_clr0400.dll

12.0.52242.36242

602,080

01-Apr-2022

07:12

Not applicable

Msvcr120_clr0400.dll

12.0.52242.36242

634,336

01-Apr-2022

07:12

Not applicable

Sos.dll

4.7.4038.0

640,400

14-Dec-2022

08:13

Not applicable

File name

File version

File size

Date

Time

Platform

Mscorlib.dll

4.7.4038.0

5,639,568

14-Dec-2022

08:21

x86

Normidna.nlp

Not applicable

59,342

26-Jul-2022

00:17

Not applicable

Normnfc.nlp

Not applicable

47,076

26-Jul-2022

00:17

Not applicable

Normnfd.nlp

Not applicable

40,566

26-Jul-2022

00:17

Not applicable

Normnfkc.nlp

Not applicable

67,808

26-Jul-2022

00:17

Not applicable

Normnfkd.nlp

Not applicable

61,718

26-Jul-2022

00:17

Not applicable

Clrjit.dll

4.7.4038.0

517,008

14-Dec-2022

08:21

x86

Clr.dll

4.7.4038.0

7,773,584

14-Dec-2022

08:21

x86

Diasymreader.dll

14.7.4038.0

1,064,896

14-Dec-2022

08:21

x86

Mscordacwks.dll

4.7.4038.0

1,336,752

14-Dec-2022

08:21

x86

Mscordbi.dll

4.7.4038.0

1,162,672

14-Dec-2022

08:21

x86

Mscorlib.ni.dll

4.7.4038.0

20,547,376

14-Dec-2022

08:21

x86

Msvcp120_clr0400.dll

12.0.52519.0

485,576

01-Apr-2022

03:58

x86

Msvcr120_clr0400.dll

12.0.52519.0

987,840

01-Apr-2022

03:58

x86

Peverify.dll

4.7.4038.0

182,672

14-Dec-2022

08:21

x86

Sos.dll

4.7.4038.0

737,200

14-Dec-2022

08:21

x86

Prerequisites

To apply this update, you must have .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 installed.

Restart requirement

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.

How to obtain help and support for this update

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