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

Summary

Denial of service vulnerabilities exist when .NET Framework improperly handles objects in heap memory, or when .NET Framework and .NET Core improperly process RegEx strings.

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

Important

  • All updates for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, and 4.7.2 require that the d3dcompiler_47.dll update is installed. We recommend that you install the included d3dcompiler_47.dll update before you apply this update. For more information about the d3dcompiler_47.dll, see KB 4019990.

  • 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

For more information about this update as it relates to its particular Windows version(s), see the following article(s) in the Microsoft Knowledge Base: 

  • 4498962 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 Server 2012 (KB4498962)

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.

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 4498962 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:

20190514 Security update deployment information: February 12, 2019

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.

Update replacement information

This update replaces previously released updates 4481483.

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

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-RT-KB4495584-x64.msu

AA324C69DEFBCF15E2BD96E94496D819E6479BF5

32634CED87F66793188845AB24AF63E6C4DD27452831D9943C500EA7E4FB5DE1

Windows8-RT-KB4495584-x86.msu

8D0E17B09C576AA2613079E8661A42E574F77B56

7AD3435CF9022FF0FE29E3188025E8D02179C03208A00DC2E77EA7419078194F

For all supported x64-based versions

File name

File version

File size

Date

Time

mscorlib.dll

4.7.3416.0

5,427,248

09-Apr-2019

03:51

normidna.nlp

59,342

15-May-2018

18:04

normnfc.nlp

47,076

15-May-2018

18:04

normnfd.nlp

40,566

15-May-2018

18:04

normnfkc.nlp

67,808

15-May-2018

18:04

normnfkd.nlp

61,718

15-May-2018

18:04

clrjit.dll

4.7.3416.0

1,221,680

09-Apr-2019

03:51

clr.dll

4.7.3416.0

10,377,776

09-Apr-2019

03:51

compatjit.dll

4.7.3416.0

1,259,568

09-Apr-2019

03:51

mscordacwks.dll

4.7.3416.0

1,840,176

09-Apr-2019

03:51

mscordbi.dll

4.7.3416.0

1,622,064

09-Apr-2019

03:51

msvcp120_clr0400.dll

12.0.52519.0

690,008

09-Mar-2019

00:18

msvcr120_clr0400.dll

12.0.52519.0

993,632

09-Mar-2019

00:18

peverify.dll

4.7.3416.0

260,144

09-Apr-2019

03:51

sos.dll

4.7.3416.0

871,984

09-Apr-2019

03:51

system.dll

4.7.3416.0

3,562,312

09-Apr-2019

03:53

system.dll

4.7.3416.0

3,562,312

09-Apr-2019

03:53

mscorlib.dll

4.7.3416.0

5,645,360

09-Apr-2019

03:53

normidna.nlp

59,342

15-May-2018

18:04

normnfc.nlp

47,076

15-May-2018

18:04

normnfd.nlp

40,566

15-May-2018

18:04

normnfkc.nlp

67,808

15-May-2018

18:04

normnfkd.nlp

61,718

15-May-2018

18:04

clrjit.dll

4.7.3416.0

522,800

09-Apr-2019

03:53

clr.dll

4.7.3416.0

7,249,456

09-Apr-2019

03:53

mscordacwks.dll

4.7.3416.0

1,343,016

09-Apr-2019

03:53

mscordbi.dll

4.7.3416.0

1,168,936

09-Apr-2019

03:53

msvcp120_clr0400.dll

12.0.52519.0

485,576

09-Mar-2019

00:18

msvcr120_clr0400.dll

12.0.52519.0

987,840

09-Mar-2019

00:18

peverify.dll

4.7.3416.0

188,696

09-Apr-2019

03:53

sos.dll

4.7.3416.0

743,688

09-Apr-2019

03:53

For all supported x86-based versions

File name

File version

File size

Date

Time

system.dll

4.7.3416.0

3,562,312

09-Apr-2019

03:53

mscorlib.dll

4.7.3416.0

5,645,360

09-Apr-2019

03:53

normidna.nlp

59,342

15-May-2018

18:04

normnfc.nlp

47,076

15-May-2018

18:04

normnfd.nlp

40,566

15-May-2018

18:04

normnfkc.nlp

67,808

15-May-2018

18:04

normnfkd.nlp

61,718

15-May-2018

18:04

clrjit.dll

4.7.3416.0

522,800

09-Apr-2019

03:53

clr.dll

4.7.3416.0

7,249,456

09-Apr-2019

03:53

mscordacwks.dll

4.7.3416.0

1,343,016

09-Apr-2019

03:53

mscordbi.dll

4.7.3416.0

1,168,936

09-Apr-2019

03:53

msvcp120_clr0400.dll

12.0.52519.0

485,576

09-Mar-2019

00:18

msvcr120_clr0400.dll

12.0.52519.0

987,840

09-Mar-2019

00:18

peverify.dll

4.7.3416.0

188,696

09-Apr-2019

03:53

sos.dll

4.7.3416.0

743,688

09-Apr-2019

03:53

Information about protection and security

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