Applies to:

Microsoft .NET Framework 3.5

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

The February 14, 2023 update for Windows Embedded 8 Standard and Windows Server 2012 includes cumulative reliability improvements in .NET Framework 3.5. 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-2023-21722 - .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.

  • 5022784 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 Standard and Windows Server 2012 (KB5022784)

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 3.5 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-RT-KB5022575-x64.msu

3A4742F36615E1F2DD49F317A8ED89DC841D2AC93E01B1167121005DDA257C10

Windows8-RT-KB5022575-x86.msu

005819F4BBF690422709EF98F7E89570F962969992E80EDF1FB5B62E3BCBB023

File name

File version

File size

Date

Time

Platform

Big5.nlp

Not applicable

66,728

21-Dec-2022

01:25

Not applicable

Bopomofo.nlp

Not applicable

82,172

21-Dec-2022

01:25

Not applicable

Ksc.nlp

Not applicable

116,756

21-Dec-2022

01:25

Not applicable

Mscorlib.dll

2.0.50727.8966

4,575,232

21-Dec-2022

01:25

x64

Normidna.nlp

Not applicable

59,342

21-Dec-2022

01:25

Not applicable

Normnfc.nlp

Not applicable

45,794

21-Dec-2022

01:25

Not applicable

Normnfd.nlp

Not applicable

39,284

21-Dec-2022

01:25

Not applicable

Normnfkc.nlp

Not applicable

66,384

21-Dec-2022

01:25

Not applicable

Normnfkd.nlp

Not applicable

60,294

21-Dec-2022

01:25

Not applicable

Prc.nlp

Not applicable

83,748

21-Dec-2022

01:25

Not applicable

Prcp.nlp

Not applicable

83,748

21-Dec-2022

01:25

Not applicable

Sortkey.nlp

Not applicable

262,148

21-Dec-2022

01:25

Not applicable

Sorttbls.nlp

Not applicable

20,320

21-Dec-2022

01:25

Not applicable

Xjis.nlp

Not applicable

28,288

21-Dec-2022

01:25

Not applicable

Mscordacwks.dll

2.0.50727.8966

1,760,672

21-Dec-2022

01:25

x64

Mscorwks.dll

2.0.50727.8966

10,626,464

21-Dec-2022

01:25

x64

Sos.dll

2.0.50727.8966

489,376

21-Dec-2022

01:25

x64

Big5.nlp

Not applicable

66,728

14-Dec-2022

01:23

Not applicable

Bopomofo.nlp

Not applicable

82,172

14-Dec-2022

01:23

Not applicable

Ksc.nlp

Not applicable

116,756

14-Dec-2022

01:23

Not applicable

Mscorlib.dll

2.0.50727.8966

4,558,848

21-Dec-2022

01:24

x86

Normidna.nlp

Not applicable

59,342

14-Dec-2022

01:23

Not applicable

Normnfc.nlp

Not applicable

45,794

14-Dec-2022

01:23

Not applicable

Normnfd.nlp

Not applicable

39,284

14-Dec-2022

01:23

Not applicable

Normnfkc.nlp

Not applicable

66,384

14-Dec-2022

01:23

Not applicable

Normnfkd.nlp

Not applicable

60,294

14-Dec-2022

01:23

Not applicable

Prc.nlp

Not applicable

83,748

14-Dec-2022

01:23

Not applicable

Prcp.nlp

Not applicable

83,748

14-Dec-2022

01:23

Not applicable

Sortkey.nlp

Not applicable

262,148

14-Dec-2022

01:23

Not applicable

Sorttbls.nlp

Not applicable

20,320

14-Dec-2022

01:23

Not applicable

Xjis.nlp

Not applicable

28,288

14-Dec-2022

01:23

Not applicable

Mscordacwks.dll

2.0.50727.8966

993,696

21-Dec-2022

01:24

x86

Mscorwks.dll

2.0.50727.8966

6,414,224

21-Dec-2022

01:24

x86

Sos.dll

2.0.50727.8966

393,120

21-Dec-2022

01:24

x86

File name

File version

File size

Date

Time

Platform

Big5.nlp

Not applicable

66,728

14-Dec-2022

01:23

Not applicable

Bopomofo.nlp

Not applicable

82,172

14-Dec-2022

01:23

Not applicable

Ksc.nlp

Not applicable

116,756

14-Dec-2022

01:23

Not applicable

Mscorlib.dll

2.0.50727.8966

4,558,848

21-Dec-2022

01:24

x86

Normidna.nlp

Not applicable

59,342

14-Dec-2022

01:23

Not applicable

Normnfc.nlp

Not applicable

45,794

14-Dec-2022

01:23

Not applicable

Normnfd.nlp

Not applicable

39,284

14-Dec-2022

01:23

Not applicable

Normnfkc.nlp

Not applicable

66,384

14-Dec-2022

01:23

Not applicable

Normnfkd.nlp

Not applicable

60,294

14-Dec-2022

01:23

Not applicable

Prc.nlp

Not applicable

83,748

14-Dec-2022

01:23

Not applicable

Prcp.nlp

Not applicable

83,748

14-Dec-2022

01:23

Not applicable

Sortkey.nlp

Not applicable

262,148

14-Dec-2022

01:23

Not applicable

Sorttbls.nlp

Not applicable

20,320

14-Dec-2022

01:23

Not applicable

Xjis.nlp

Not applicable

28,288

14-Dec-2022

01:23

Not applicable

Mscordacwks.dll

2.0.50727.8966

993,696

21-Dec-2022

01:24

x86

Mscorwks.dll

2.0.50727.8966

6,414,224

21-Dec-2022

01:24

x86

Sos.dll

2.0.50727.8966

393,120

21-Dec-2022

01:24

x86

Prerequisites

To apply this update, you must have .NET Framework 3.5 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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