Applies to:

Microsoft .NET Framework 4.5.2

Summary

A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly. An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

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

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.

Additional information about this update

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

  • 4534978 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 (KB4534978)

How to obtain and install the update

Method 1: Microsoft Update Catalog

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

Method 2: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Select Start, select Administrative Tools, and then select Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then select Action.

  3. Select Import Updates.

  4. WSUS opens a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.

  5. After the ActiveX control is installed, you see the Microsoft Update Catalog screen. Type 4534978 into the Search box, and then select Search.

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Select Add to add them to your basket.

  7. After you select all the packages that you require, select View Basket.

  8. To import the packages to your WSUS server, select Import.

  9. After the packages are imported, select Close to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

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

20200114 Security update deployment information: January 14, 2020

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

Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2 file information

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

File information

File hash information

File name

SHA1 hash

SHA256 hash

Windows8.1-KB4532962-x64.msu

869C952E2C6F9E3BFCAB3B5B86B4536795BB0756

C7EAE8AA6F51772FEC809C99F90F5E613BC4D31A5A8BF517A243F75512C069CE

Windows8.1-KB4532962-arm.msu

B4BF29E082AD79983D86169F3A0B0FC87C20D5E9

51D49850B5B02B31A5B8B0A10549DC3CED21E05C61CCDB15D1A18FF85EB51B3A

Windows8.1-KB4532962-x86.msu

79692334E11068878B1DABF123830943B973711F

6588CC2B4E9250D00F5E7E5085E20E27B4E2A4331E54E84862C3911CEEBC38CC

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

Msvcp120_clr0400.dll

12.0.52577.36577

679,200

07-Dec-2019

14:31

x64

Msvcr120_clr0400.dll

12.0.52577.36577

870,176

07-Dec-2019

14:31

x64

Penimc.dll

4.0.30319.36577

95,520

07-Dec-2019

14:31

x64

Presentationframework.dll

4.0.30319.36577

6,226,208

07-Dec-2019

14:31

x86

Presentationhost_v0400.dll.mui

4.0.30319.36577

85,280

07-Dec-2019

14:31

Not applicable

Presentationhost_v0400.dll

4.0.30319.36577

232,944

07-Dec-2019

14:31

x64

Presentationnative_v0400.dll

4.0.30319.36577

1,078,560

07-Dec-2019

14:31

x64

Reachframework.dll

4.0.30319.36577

599,024

07-Dec-2019

14:31

x86

System.core.dll

4.0.30319.36577

1,272,888

07-Dec-2019

14:30

x86

System.windows.controls.ribbon.dll

4.0.30319.36577

752,104

07-Dec-2019

14:31

x86

System.workflow.activities.dll

4.0.30319.36577

1,068,824

07-Dec-2019

14:31

x86

System.workflow.componentmodel.dll

4.0.30319.36577

1,571,616

07-Dec-2019

14:31

x86

System.workflow.runtime.dll

4.0.30319.36577

504,088

07-Dec-2019

14:31

x86

System.xaml.dll

4.0.30319.36577

641,376

07-Dec-2019

14:31

x86

Windowsbase.dll

4.0.30319.36577

1,242,400

07-Dec-2019

14:31

x86

Workflowservicehostperformancecounters.dll

4.0.30319.36577

85,792

07-Dec-2019

14:31

x64

Wpfgfx_v0400.dll

4.0.30319.36577

2,109,216

07-Dec-2019

14:31

x64

Presentationcore.dll

4.0.30319.36577

3,211,552

07-Dec-2019

14:31

x64

System.printing.dll

4.0.30319.36577

343,328

07-Dec-2019

14:31

x64

Presentationframework.dll

4.0.30319.36577

6,226,208

06-Dec-2019

14:26

x86

Reachframework.dll

4.0.30319.36577

599,024

06-Dec-2019

14:26

x86

System.core.dll

4.0.30319.36577

1,272,888

06-Dec-2019

14:26

x86

System.windows.controls.ribbon.dll

4.0.30319.36577

752,104

06-Dec-2019

14:26

x86

System.workflow.activities.dll

4.0.30319.36577

1,068,824

06-Dec-2019

14:26

x86

System.workflow.componentmodel.dll

4.0.30319.36577

1,571,616

06-Dec-2019

14:26

x86

System.workflow.runtime.dll

4.0.30319.36577

504,088

06-Dec-2019

14:26

x86

System.xaml.dll

4.0.30319.36577

641,376

06-Dec-2019

14:26

x86

Windowsbase.dll

4.0.30319.36577

1,242,400

06-Dec-2019

14:26

x86

Msvcp120_clr0400.dll

12.0.52577.36577

537,376

06-Dec-2019

14:26

x86

Msvcr120_clr0400.dll

12.0.52577.36577

876,320

06-Dec-2019

14:26

x86

Penimc.dll

4.0.30319.36577

82,208

06-Dec-2019

14:26

x86

Presentationhost_v0400.dll.mui

4.0.30319.36577

85,488

06-Dec-2019

14:26

Not applicable

Presentationhost_v0400.dll

4.0.30319.36577

186,864

06-Dec-2019

14:26

x86

Presentationnative_v0400.dll

4.0.30319.36577

791,024

06-Dec-2019

14:26

x86

System.core.dll

4.0.30319.36577

1,272,888

06-Dec-2019

14:26

x86

Workflowservicehostperformancecounters.dll

4.0.30319.36577

76,776

06-Dec-2019

14:26

x86

Wpfgfx_v0400.dll

4.0.30319.36577

1,648,928

06-Dec-2019

14:26

x86

Presentationcore.dll

4.0.30319.36577

3,227,424

06-Dec-2019

14:26

x86

System.printing.dll

4.0.30319.36577

343,840

06-Dec-2019

14:26

x86

For all supported ARM-based versions

File name

File version

File size

Date

Time

Platform

Msvcp120_clr0400.dll

12.0.52577.36577

601,864

06-Dec-2019

14:30

Not applicable

Msvcr120_clr0400.dll

12.0.52577.36577

634,120

06-Dec-2019

14:30

Not applicable

System.core.dll

4.0.30319.36577

1,272,888

06-Dec-2019

14:30

x86

Workflowservicehostperformancecounters.dll

4.0.30319.36577

62,936

06-Dec-2019

14:30

Not applicable

System.core.dll

4.0.30319.36577

1,272,888

06-Dec-2019

14:30

x86

System.xaml.dll

4.0.30319.36577

641,376

06-Dec-2019

14:30

x86

For all supported x86-based versions

File name

File version

File size

Date

Time

Platform

Presentationframework.dll

4.0.30319.36577

6,226,208

06-Dec-2019

14:26

x86

Reachframework.dll

4.0.30319.36577

599,024

06-Dec-2019

14:26

x86

System.core.dll

4.0.30319.36577

1,272,888

06-Dec-2019

14:26

x86

System.windows.controls.ribbon.dll

4.0.30319.36577

752,104

06-Dec-2019

14:26

x86

System.workflow.activities.dll

4.0.30319.36577

1,068,824

06-Dec-2019

14:26

x86

System.workflow.componentmodel.dll

4.0.30319.36577

1,571,616

06-Dec-2019

14:26

x86

System.workflow.runtime.dll

4.0.30319.36577

504,088

06-Dec-2019

14:26

x86

System.xaml.dll

4.0.30319.36577

641,376

06-Dec-2019

14:26

x86

Windowsbase.dll

4.0.30319.36577

1,242,400

06-Dec-2019

14:26

x86

Msvcp120_clr0400.dll

12.0.52577.36577

537,376

06-Dec-2019

14:26

x86

Msvcr120_clr0400.dll

12.0.52577.36577

876,320

06-Dec-2019

14:26

x86

Penimc.dll

4.0.30319.36577

82,208

06-Dec-2019

14:26

x86

Presentationhost_v0400.dll.mui

4.0.30319.36577

85,488

06-Dec-2019

14:26

Not applicable

Presentationhost_v0400.dll

4.0.30319.36577

186,864

06-Dec-2019

14:26

x86

Presentationnative_v0400.dll

4.0.30319.36577

791,024

06-Dec-2019

14:26

x86

System.core.dll

4.0.30319.36577

1,272,888

06-Dec-2019

14:26

x86

Workflowservicehostperformancecounters.dll

4.0.30319.36577

76,776

06-Dec-2019

14:26

x86

Wpfgfx_v0400.dll

4.0.30319.36577

1,648,928

06-Dec-2019

14:26

x86

Presentationcore.dll

4.0.30319.36577

3,227,424

06-Dec-2019

14:26

x86

System.printing.dll

4.0.30319.36577

343,840

06-Dec-2019

14:26

x86

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