Security Only Update for .NET Framework 3.5 for Windows 8.1 and Server 2012 R2 (KB4495615)

Applies to:

Microsoft .NET Framework 3.5

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 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

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:.

  • 4498963 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 Server 2012 R2 (KB4498963)

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 4498963 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 update 4481485.

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

Windows8.1-KB4495615-x64.msu

391ABFC2C951D2EEF1DE240F64D17FDAB88116ED

E35BC04DB266FD21565C1DC981BC98E4285BAF5FF155C6335C40C67068162E0D

Windows8.1-KB4495615-x86.msu

D15DCD875E0E12FD39892798A2B7EFA4CA8E1399

7FCDF855B8999F978B98C4945ADE063416F96874D3201DC9212002A2A9727670

For all supported x64-based versions

File name

File version

File size

Date

Time

big5.nlp

66,728

07-Nov-2017

17:43

bopomofo.nlp

82,172

07-Nov-2017

17:43

ksc.nlp

116,756

07-Nov-2017

17:43

mscorlib.dll

2.0.50727.8806

4,575,232

29-Mar-2019

13:19

normidna.nlp

59,342

07-Nov-2017

17:43

normnfc.nlp

45,794

07-Nov-2017

17:43

normnfd.nlp

39,284

07-Nov-2017

17:43

normnfkc.nlp

66,384

07-Nov-2017

17:43

normnfkd.nlp

60,294

07-Nov-2017

17:43

prc.nlp

83,748

07-Nov-2017

17:43

prcp.nlp

83,748

07-Nov-2017

17:43

sortkey.nlp

262,148

07-Nov-2017

17:43

sorttbls.nlp

20,320

07-Nov-2017

17:43

xjis.nlp

28,288

07-Nov-2017

17:43

mscordacwks.dll

2.0.50727.8806

1,757,336

29-Mar-2019

13:19

mscorwks.dll

2.0.50727.8806

10,007,192

29-Mar-2019

13:19

sos.dll

2.0.50727.8806

486,040

29-Mar-2019

13:19

system.dll

2.0.50727.8806

3,211,264

29-Mar-2019

13:19

system.dll

2.0.50727.8806

3,211,264

29-Mar-2019

13:17

big5.nlp

66,728

27-Oct-2017

23:27

bopomofo.nlp

82,172

27-Oct-2017

23:27

ksc.nlp

116,756

27-Oct-2017

23:27

mscorlib.dll

2.0.50727.8806

4,558,848

29-Mar-2019

13:17

normidna.nlp

59,342

27-Oct-2017

23:27

normnfc.nlp

45,794

27-Oct-2017

23:27

normnfd.nlp

39,284

27-Oct-2017

23:27

normnfkc.nlp

66,384

27-Oct-2017

23:27

normnfkd.nlp

60,294

27-Oct-2017

23:27

prc.nlp

83,748

27-Oct-2017

23:27

prcp.nlp

83,748

27-Oct-2017

23:27

sortkey.nlp

262,148

27-Oct-2017

23:27

sorttbls.nlp

20,320

27-Oct-2017

23:27

xjis.nlp

28,288

27-Oct-2017

23:27

mscordacwks.dll

2.0.50727.8806

990,360

29-Mar-2019

13:17

mscorwks.dll

2.0.50727.8806

5,947,032

29-Mar-2019

13:17

sos.dll

2.0.50727.8806

389,784

29-Mar-2019

13:17

For all supported x86-based versions

File name

File version

File size

Date

Time

system.dll

2.0.50727.8806

3,211,264

29-Mar-2019

13:17

big5.nlp

66,728

27-Oct-2017

23:27

bopomofo.nlp

82,172

27-Oct-2017

23:27

ksc.nlp

116,756

27-Oct-2017

23:27

mscorlib.dll

2.0.50727.8806

4,558,848

29-Mar-2019

13:17

normidna.nlp

59,342

27-Oct-2017

23:27

normnfc.nlp

45,794

27-Oct-2017

23:27

normnfd.nlp

39,284

27-Oct-2017

23:27

normnfkc.nlp

66,384

27-Oct-2017

23:27

normnfkd.nlp

60,294

27-Oct-2017

23:27

prc.nlp

83,748

27-Oct-2017

23:27

prcp.nlp

83,748

27-Oct-2017

23:27

sortkey.nlp

262,148

27-Oct-2017

23:27

sorttbls.nlp

20,320

27-Oct-2017

23:27

xjis.nlp

28,288

27-Oct-2017

23:27

mscordacwks.dll

2.0.50727.8806

990,360

29-Mar-2019

13:17

mscorwks.dll

2.0.50727.8806

5,947,032

29-Mar-2019

13:17

sos.dll

2.0.50727.8806

389,784

29-Mar-2019

13:17

Information about protection and security

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