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Applies to:

Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2

IMPORTANT

  • As a reminder to advanced IT administrators, updates to .NET Framework 3.5 for Windows 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.

  • All updates for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2 require that update KB 2919355 is installed. We recommend that you install update KB 2919355 on your Windows 8.1-based, Windows RT 8.1-based, or Windows Server 2012 R2-based computer so that you receive updates in the future.

  • 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.

Summary

This security update addresses an issue where an unauthenticated attacker could cause a denial of service on an affected system. For more information please see CVE-2022-21911.

Known issues in this update

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

Additional information about this update

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

  • 5009713 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 8.1 and Windows Server 2012 R2 (KB5009713)

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 4.6, 4.6.1, 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 update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product:Windows 8.1 and Windows Server 2012 R2

Classification: Security Updates

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:

20220111 Security update deployment information: January 11, 2022

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-KB5008895-x64.msu

DE78772EEA43D05B63A025CADE64874945E26EEF4A6E6A985417620AC1E124E1

Windows8.1-KB5008895-arm.msu

8CFE2CFDEDE157140A395E2A671BD382E7F8B84176832E79D70ADA48B6B2A9C7

Windows8.1-KB5008895-x86.msu

D110BF1C389CB7F76920BD4E6C94AA1287C40CFA2AC3498F1E7D8FA388D3D78F

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Aspnet_perf.dll

4.7.3905.0

39,312

19-Nov-2021

23:47

x64

SPN

AMD64_NETFX4-ASP

Aspnet_state_perf.h

Not applicable

318

19-Nov-2021

22:21

Not applicable

SPN

AMD64_NETFX4-ASP

Aspnet_state_perf.ini

Not applicable

42,996

19-Nov-2021

23:47

Not applicable

SPN

AMD64_NETFX4-ASP

Aspnet_wp.exe

4.7.3905.0

43,928

19-Nov-2021

23:47

x64

SPN

AMD64_NETFX4-ASP

Msvcp120_clr0400.dll

12.0.52519.0

690,008

29-Nov-2021

19:37

x64

None

Not applicable

Msvcr120_clr0400.dll

12.0.52519.0

993,632

29-Nov-2021

19:37

x64

None

Not applicable

System.web.applicationservices.dll

4.7.3905.0

63,736

19-Nov-2021

23:50

x86

None

Not applicable

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

None

Not applicable

Webengine4.dll

4.7.3905.0

660,368

19-Nov-2021

23:47

x64

None

Not applicable

Webengine.dll

4.7.3905.0

19,344

19-Nov-2021

23:47

x64

None

Not applicable

System.web.dll

4.7.3905.0

5,393,272

19-Nov-2021

23:47

x64

None

Not applicable

System.web.applicationservices.dll

4.7.3905.0

63,736

19-Nov-2021

23:50

x86

None

Not applicable

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

None

Not applicable

Aspnet_perf.dll

4.7.3905.0

35,704

19-Nov-2021

23:50

x86

SPN

X86_NETFX4-ASP

Aspnet_state_perf.h

Not applicable

318

19-Nov-2021

22:15

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_state_perf.ini

Not applicable

42,996

19-Nov-2021

23:52

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_wp.exe

4.7.3905.0

39,296

19-Nov-2021

23:50

x86

SPN

X86_NETFX4-ASP

Msvcp120_clr0400.dll

12.0.52519.0

485,576

29-Nov-2021

20:08

x86

None

Not applicable

Msvcr120_clr0400.dll

12.0.52519.0

987,840

29-Nov-2021

20:08

x86

None

Not applicable

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

None

Not applicable

Webengine4.dll

4.7.3905.0

543,112

19-Nov-2021

23:50

x86

None

Not applicable

Webengine.dll

4.7.3905.0

17,784

19-Nov-2021

23:50

x86

None

Not applicable

System.web.dll

4.7.3905.0

5,409,656

19-Nov-2021

23:50

x86

None

Not applicable

File name

File version

File size

Date

Time

Platform

Msvcp120_clr0400.dll

12.0.52242.36242

602,080

29-Nov-2021

20:08

Not applicable

Msvcr120_clr0400.dll

12.0.52242.36242

634,336

29-Nov-2021

20:08

Not applicable

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

System.web.dll

4.7.3905.0

5,417,720

19-Nov-2021

23:45

Not applicable

System.web.applicationservices.dll

4.7.3905.0

63,736

19-Nov-2021

23:50

x86

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

System.web.applicationservices.dll

4.7.3905.0

63,736

19-Nov-2021

23:50

x86

None

Not applicable

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

None

Not applicable

Aspnet_perf.dll

4.7.3905.0

35,704

19-Nov-2021

23:50

x86

SPN

X86_NETFX4-ASP

Aspnet_state_perf.h

Not applicable

318

19-Nov-2021

22:15

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_state_perf.ini

Not applicable

42,996

19-Nov-2021

23:52

Not applicable

SPN

X86_NETFX4-ASP

Aspnet_wp.exe

4.7.3905.0

39,296

19-Nov-2021

23:50

x86

SPN

X86_NETFX4-ASP

Msvcp120_clr0400.dll

12.0.52519.0

485,576

29-Nov-2021

20:08

x86

None

Not applicable

Msvcr120_clr0400.dll

12.0.52519.0

987,840

29-Nov-2021

20:08

x86

None

Not applicable

System.web.extensions.dll

4.7.3905.0

1,842,968

19-Nov-2021

23:50

x86

None

Not applicable

Webengine4.dll

4.7.3905.0

543,112

19-Nov-2021

23:50

x86

None

Not applicable

Webengine.dll

4.7.3905.0

17,784

19-Nov-2021

23:50

x86

None

Not applicable

System.web.dll

4.7.3905.0

5,409,656

19-Nov-2021

23:50

x86

None

Not applicable

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