Security and Quality Rollup for .NET Framework 4.8 for Windows 7 SP1 and Server 2008 R2 SP1 (KB4495626)

Applies to:

Microsoft .NET Framework 4.8

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

  • 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:

  • 4499406 Security and Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Server 2008 R2 SP1 (KB4499406)

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

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

Method 3: 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 4499406 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: May 14, 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 4487078 and 4487256.

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

NDP48-KB4495626-x64.exe

EBC58920DB0DE11A7E0B9C7D21A83D0A45D10B33

33DECA12E371A0C385DAFE3E65E073851D03DCF04DF880BB95295A7844B8B8DC

NDP48-KB4495626-x86.exe

E15E851168002251010CE774A82591C4913990C4

2C601F12EFD2B0D1943B28605FBEFFAED808B493EDD96541970B204ECEDC72F0

For all supported x64-based versions

File name

File version

File size

Date

Time

clr.dll

4.8.3801.0

11,268,656

09-Apr-2019

22:46

clr.dll

4.8.3801.0

8,042,240

09-Apr-2019

22:36

clrjit.dll

4.8.3801.0

1,364,528

09-Apr-2019

22:46

clrjit.dll

4.8.3801.0

560,688

09-Apr-2019

22:36

compatjit.dll

4.8.3801.0

1,280,048

09-Apr-2019

22:46

mscordacwks.dll

4.8.3801.0

1,807,920

09-Apr-2019

22:46

mscordacwks.dll

4.8.3801.0

1,314,344

09-Apr-2019

22:36

mscordbi.dll

4.8.3801.0

1,660,976

09-Apr-2019

22:46

mscordbi.dll

4.8.3801.0

1,195,056

09-Apr-2019

22:36

mscorlib.dll

4.8.3801.0

5,436,968

09-Apr-2019

22:46

mscorlib.dll

4.8.3801.0

5,676,288

09-Apr-2019

22:36

peverify.dll

4.8.3801.0

272,432

09-Apr-2019

22:46

peverify.dll

4.8.3801.0

189,720

09-Apr-2019

22:36

SOS.dll

4.8.3801.0

928,304

09-Apr-2019

22:46

SOS.dll

4.8.3801.0

774,192

09-Apr-2019

22:36

System.dll

4.8.3801.0

3,558,304

09-Apr-2019

22:36

For all supported x86-based versions

File name

File version

File size

Date

Time

clr.dll

4.8.3801.0

8,042,240

09-Apr-2019

22:36

clrjit.dll

4.8.3801.0

560,688

09-Apr-2019

22:36

mscordacwks.dll

4.8.3801.0

1,314,344

09-Apr-2019

22:36

mscordbi.dll

4.8.3801.0

1,195,056

09-Apr-2019

22:36

mscorlib.dll

4.8.3801.0

5,676,288

09-Apr-2019

22:36

peverify.dll

4.8.3801.0

189,720

09-Apr-2019

22:36

SOS.dll

4.8.3801.0

774,192

09-Apr-2019

22:36

System.dll

4.8.3801.0

3,558,304

09-Apr-2019

22:36

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