Applies To.NET

Applies to:

Microsoft .NET Framework 3.5

REMINDER

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

  • 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.

The August 8, 2023 update for Windows Server 2012 R2 includes cumulative security and reliability improvements in .NET Framework 3.5. We recommend that you apply this update as part of your regular maintenance routines. Verify that you have installed the required updates listed in the How to get this update section before installing this update.

Summary

Security Improvements

CVE-2023-36899 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in applications on IIS using their parent application’s Application Pool which can lead to privilege escalation or other security bypasses. For more information see CVE 2023-36899.

Quality and Reliability Improvements

There are no new Quality and Reliability Improvements in this update.

Additional information about this update

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

  • 5029653 Description of the Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 (KB5029653)

Known issues in this update

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

How to get this update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 3.5 installed.

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

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 individual .NET Framework product update will be installed, as applicable, by applying the operating system update. For more information about operating system updates see additional information about this update section.

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:

20230808 Security update deployment information: August 8, 2023

Update replacement information

This update replaces previously released updates KB5027542 and KB5028941 and KB5028941.

File Information

File hash information

File name

SHA256 hash

windows8.1-kb5028970-x86.msu

BB44D910463408F95F847F9F9857E30A41874A9D90F1CE67D01ED36718BE900C

windows8.1-kb5028970-x64.msu

587706A53B02E0C66B6EB22C3222E552C3FF06B4A82C84F1595E481A088BC0F3

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Presentationframework.dll

3.0.6920.8955

5,292,032

16-Jul-2023

00:21

x86

None

Not applicable

Reachframework.dll

3.0.6920.8955

536,576

16-Jul-2023

00:21

x86

None

Not applicable

Smdiagnostics.dll

3.0.4506.8841

110,592

28-Mar-2020

13:37

x86

None

Not applicable

Smsvchost.exe

3.0.4506.8841

139,568

28-Mar-2020

13:37

x86

None

Not applicable

System.configuration.dll

2.0.50727.8953

430,080

03-Sep-2020

14:12

x86

None

Not applicable

System.data.sqlxml.dll

2.0.50727.8773

745,472

12-Dec-2017

13:09

x86

None

Not applicable

System.directoryservices.dll

2.0.50727.8964

401,408

03-Jun-2022

00:43

x86

None

Not applicable

System.identitymodel.dll

3.0.4506.8841

446,464

28-Mar-2020

13:37

x86

None

Not applicable

System.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:11

x86

None

Not applicable

System.runtime.remoting.dll

2.0.50727.8771

307,200

31-Aug-2017

13:17

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

970,752

28-Mar-2020

13:37

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

970,752

28-Mar-2020

13:37

x86

None

Not applicable

System.security.dll

2.0.50727.8953

274,432

03-Sep-2020

14:12

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,996,544

28-Mar-2020

13:37

x86

None

Not applicable

System.servicemodel.washosting.dll

3.0.4506.8841

32,768

28-Mar-2020

13:37

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,996,544

28-Mar-2020

13:37

x86

None

Not applicable

System.web.extensions.dll

3.5.30729.8814

1,282,048

02-Nov-2018

13:14

x86

None

Not applicable

System.web.regularexpressions.dll

2.0.50727.8974

98,304

16-Jul-2023

00:20

x86

None

Not applicable

System.workflow.activities.dll

3.0.4203.8833

1,142,784

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.componentmodel.dll

3.0.4203.8833

1,638,400

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.runtime.dll

3.0.4203.8833

540,672

06-Dec-2019

14:26

x86

None

Not applicable

System.xml.dll

2.0.50727.8773

2,056,192

12-Dec-2017

13:09

x86

None

Not applicable

System.dll

2.0.50727.8970

3,211,264

05-May-2023

00:20

x86

None

Not applicable

Windowsbase.dll

3.0.6920.8955

1,257,472

16-Jul-2023

00:21

x86

None

Not applicable

Big5.nlp

Not applicable

66,728

25-Jun-2023

00:58

Not applicable

None

Not applicable

Bopomofo.nlp

Not applicable

82,172

25-Jun-2023

00:58

Not applicable

None

Not applicable

Ksc.nlp

Not applicable

116,756

25-Jun-2023

00:58

Not applicable

None

Not applicable

Mscorlib.dll

2.0.50727.8974

4,628,480

16-Jul-2023

00:20

x86

None

Not applicable

Normidna.nlp

Not applicable

59,342

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfc.nlp

Not applicable

45,794

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfd.nlp

Not applicable

39,284

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfkc.nlp

Not applicable

66,384

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfkd.nlp

Not applicable

60,294

25-Jun-2023

00:58

Not applicable

None

Not applicable

Prc.nlp

Not applicable

83,748

25-Jun-2023

00:58

Not applicable

None

Not applicable

Prcp.nlp

Not applicable

83,748

25-Jun-2023

00:58

Not applicable

None

Not applicable

Sortkey.nlp

Not applicable

262,148

25-Jun-2023

00:58

Not applicable

None

Not applicable

Sorttbls.nlp

Not applicable

20,320

25-Jun-2023

00:58

Not applicable

None

Not applicable

Xjis.nlp

Not applicable

28,288

25-Jun-2023

00:58

Not applicable

None

Not applicable

Aspnet_wp.exe

2.0.50727.8974

34,760

16-Jul-2023

00:20

x86

SPN

X86_NETFX-ASP

Mscordacwks.dll

2.0.50727.8974

993,728

16-Jul-2023

00:20

x86

None

Not applicable

Mscorsvc.dll

2.0.50727.8793

231,992

24-Jul-2018

13:10

x86

None

Not applicable

Mscorwks.dll

2.0.50727.8974

6,414,232

16-Jul-2023

00:20

x86

None

Not applicable

Sos.dll

2.0.50727.8974

393,152

16-Jul-2023

00:20

x86

None

Not applicable

Webengine.dll

2.0.50727.8974

440,760

16-Jul-2023

00:20

x86

None

Not applicable

Wminet_utils.dll

2.0.50727.8766

116,896

12-Jul-2017

13:11

x86

None

Not applicable

System.web.extensions.dll

3.5.30729.8814

1,282,048

02-Nov-2018

13:14

x86

None

Not applicable

Presentationcore.dll

3.0.6920.8955

4,222,976

16-Jul-2023

00:21

x86

None

Not applicable

Presentationfontcache.exe.config

Not applicable

161

25-Jun-2023

01:01

Not applicable

None

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8955

1,741,208

16-Jul-2023

00:21

x86

None

Not applicable

System.data.dll

2.0.50727.8970

2,983,936

07-May-2023

00:20

x86

None

Not applicable

System.printing.dll

3.0.6920.8955

372,736

16-Jul-2023

00:21

x86

None

Not applicable

System.web.dll

2.0.50727.8974

5,292,032

16-Jul-2023

00:20

x86

None

Not applicable

Servicemonikersupport.dll

3.0.4506.8841

28,152

28-Mar-2020

13:37

x86

None

Not applicable

System.identitymodel.dll

3.0.4506.8841

446,464

28-Mar-2020

13:37

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

970,752

28-Mar-2020

13:37

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,996,544

28-Mar-2020

13:37

x86

None

Not applicable

Penimc.dll

3.0.6920.8955

72,128

16-Jul-2023

00:21

x86

None

Not applicable

Presentationframework.dll

3.0.6920.8955

5,292,032

16-Jul-2023

00:21

x86

None

Not applicable

Presentationhostdll.dll

3.0.6920.8955

134,552

16-Jul-2023

00:21

x86

None

Not applicable

Reachframework.dll

3.0.6920.8955

536,576

16-Jul-2023

00:21

x86

None

Not applicable

Windowsbase.dll

3.0.6920.8955

1,257,472

16-Jul-2023

00:21

x86

None

Not applicable

System.workflow.activities.dll

3.0.4203.8833

1,142,784

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.componentmodel.dll

3.0.4203.8833

1,638,400

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.runtime.dll

3.0.4203.8833

540,672

06-Dec-2019

14:26

x86

None

Not applicable

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Big5.nlp

Not applicable

66,728

14-May-2023

00:21

Not applicable

None

Not applicable

Bopomofo.nlp

Not applicable

82,172

14-May-2023

00:21

Not applicable

None

Not applicable

Ksc.nlp

Not applicable

116,756

14-May-2023

00:21

Not applicable

None

Not applicable

Mscorlib.dll

2.0.50727.8974

4,644,864

16-Jul-2023

00:19

x64

None

Not applicable

Normidna.nlp

Not applicable

59,342

14-May-2023

00:21

Not applicable

None

Not applicable

Normnfc.nlp

Not applicable

45,794

14-May-2023

00:21

Not applicable

None

Not applicable

Normnfd.nlp

Not applicable

39,284

14-May-2023

00:21

Not applicable

None

Not applicable

Normnfkc.nlp

Not applicable

66,384

14-May-2023

00:21

Not applicable

None

Not applicable

Normnfkd.nlp

Not applicable

60,294

14-May-2023

00:21

Not applicable

None

Not applicable

Prc.nlp

Not applicable

83,748

14-May-2023

00:21

Not applicable

None

Not applicable

Prcp.nlp

Not applicable

83,748

14-May-2023

00:21

Not applicable

None

Not applicable

Sortkey.nlp

Not applicable

262,148

14-May-2023

00:21

Not applicable

None

Not applicable

Sorttbls.nlp

Not applicable

20,320

14-May-2023

00:21

Not applicable

None

Not applicable

Xjis.nlp

Not applicable

28,288

14-May-2023

00:21

Not applicable

None

Not applicable

Aspnet_wp.exe

2.0.50727.8974

46,520

16-Jul-2023

00:19

x64

SPN

AMD64_NETFX-ASP

Mscordacwks.dll

2.0.50727.8974

1,760,704

16-Jul-2023

00:19

x64

None

Not applicable

Mscorsvc.dll

2.0.50727.8793

495,232

24-Jul-2018

13:11

x64

None

Not applicable

Mscorwks.dll

2.0.50727.8974

10,626,480

16-Jul-2023

00:19

x64

None

Not applicable

Sos.dll

2.0.50727.8974

489,368

16-Jul-2023

00:19

x64

None

Not applicable

System.configuration.dll

2.0.50727.8953

430,080

03-Sep-2020

14:21

x86

None

Not applicable

System.data.sqlxml.dll

2.0.50727.8773

745,472

29-Nov-2017

05:34

x86

None

Not applicable

System.directoryservices.dll

2.0.50727.8964

401,408

04-Jun-2022

05:38

x86

None

Not applicable

System.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:08

x86

None

Not applicable

System.runtime.remoting.dll

2.0.50727.8771

307,200

31-Aug-2017

13:15

x86

None

Not applicable

System.security.dll

2.0.50727.8953

274,432

03-Sep-2020

14:21

x86

None

Not applicable

System.web.regularexpressions.dll

2.0.50727.8974

98,304

16-Jul-2023

00:20

x86

None

Not applicable

System.xml.dll

2.0.50727.8773

2,056,192

29-Nov-2017

05:34

x86

None

Not applicable

System.dll

2.0.50727.8970

3,211,264

05-May-2023

00:21

x86

None

Not applicable

Webengine.dll

2.0.50727.8974

750,000

16-Jul-2023

00:20

x64

None

Not applicable

Wminet_utils.dll

2.0.50727.8766

140,960

12-Jul-2017

13:08

x64

None

Not applicable

System.web.extensions.dll

3.5.30729.8814

1,282,048

03-Nov-2018

13:13

x86

None

Not applicable

Presentationcore.dll

3.0.6920.8955

4,006,400

16-Jul-2023

00:21

x64

None

Not applicable

Presentationfontcache.exe.config

Not applicable

161

14-May-2023

00:28

Not applicable

None

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8955

2,259,384

16-Jul-2023

00:21

x64

None

Not applicable

System.data.dll

2.0.50727.8970

3,158,016

07-May-2023

00:20

x64

None

Not applicable

System.printing.dll

3.0.6920.8955

358,400

16-Jul-2023

00:21

x64

None

Not applicable

System.web.dll

2.0.50727.8974

5,300,224

16-Jul-2023

00:20

x64

None

Not applicable

Servicemonikersupport.dll

3.0.4506.8841

30,192

28-Mar-2020

14:00

x64

None

Not applicable

Smdiagnostics.dll

3.0.4506.8841

94,208

28-Mar-2020

14:00

x86

None

Not applicable

Smsvchost.exe

3.0.4506.8841

127,488

28-Mar-2020

14:00

x86

None

Not applicable

System.identitymodel.dll

3.0.4506.8841

405,504

28-Mar-2020

14:00

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

847,872

28-Mar-2020

14:00

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

847,872

28-Mar-2020

14:00

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,337,088

28-Mar-2020

14:00

x86

None

Not applicable

System.servicemodel.washosting.dll

3.0.4506.8841

32,768

28-Mar-2020

14:00

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,337,088

28-Mar-2020

14:00

x86

None

Not applicable

Penimc.dll

3.0.6920.8955

89,024

16-Jul-2023

00:21

x64

None

Not applicable

Presentationframework.dll

3.0.6920.8955

4,648,960

16-Jul-2023

00:21

x86

None

Not applicable

Presentationhostdll.dll

3.0.6920.8955

175,544

16-Jul-2023

00:21

x64

None

Not applicable

Reachframework.dll

3.0.6920.8955

536,576

16-Jul-2023

00:21

x86

None

Not applicable

Windowsbase.dll

3.0.6920.8955

1,118,208

16-Jul-2023

00:21

x86

None

Not applicable

System.workflow.activities.dll

3.0.4203.8833

1,060,864

07-Dec-2019

14:31

x86

None

Not applicable

System.workflow.componentmodel.dll

3.0.4203.8833

1,531,904

07-Dec-2019

14:31

x86

None

Not applicable

System.workflow.runtime.dll

3.0.4203.8833

454,656

07-Dec-2019

14:31

x86

None

Not applicable

Presentationframework.dll

3.0.6920.8955

5,292,032

16-Jul-2023

00:21

x86

None

Not applicable

Reachframework.dll

3.0.6920.8955

536,576

16-Jul-2023

00:21

x86

None

Not applicable

Smdiagnostics.dll

3.0.4506.8841

110,592

28-Mar-2020

13:37

x86

None

Not applicable

Smsvchost.exe

3.0.4506.8841

139,568

28-Mar-2020

13:37

x86

None

Not applicable

System.configuration.dll

2.0.50727.8953

430,080

03-Sep-2020

14:12

x86

None

Not applicable

System.data.sqlxml.dll

2.0.50727.8773

745,472

12-Dec-2017

13:09

x86

None

Not applicable

System.directoryservices.dll

2.0.50727.8964

401,408

03-Jun-2022

00:43

x86

None

Not applicable

System.identitymodel.dll

3.0.4506.8841

446,464

28-Mar-2020

13:37

x86

None

Not applicable

System.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:11

x86

None

Not applicable

System.runtime.remoting.dll

2.0.50727.8771

307,200

31-Aug-2017

13:17

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

970,752

28-Mar-2020

13:37

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

970,752

28-Mar-2020

13:37

x86

None

Not applicable

System.security.dll

2.0.50727.8953

274,432

03-Sep-2020

14:12

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,996,544

28-Mar-2020

13:37

x86

None

Not applicable

System.servicemodel.washosting.dll

3.0.4506.8841

32,768

28-Mar-2020

13:37

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,996,544

28-Mar-2020

13:37

x86

None

Not applicable

System.web.extensions.dll

3.5.30729.8814

1,282,048

02-Nov-2018

13:14

x86

None

Not applicable

System.web.regularexpressions.dll

2.0.50727.8974

98,304

16-Jul-2023

00:20

x86

None

Not applicable

System.workflow.activities.dll

3.0.4203.8833

1,142,784

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.componentmodel.dll

3.0.4203.8833

1,638,400

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.runtime.dll

3.0.4203.8833

540,672

06-Dec-2019

14:26

x86

None

Not applicable

System.xml.dll

2.0.50727.8773

2,056,192

12-Dec-2017

13:09

x86

None

Not applicable

System.dll

2.0.50727.8970

3,211,264

05-May-2023

00:20

x86

None

Not applicable

Windowsbase.dll

3.0.6920.8955

1,257,472

16-Jul-2023

00:21

x86

None

Not applicable

Big5.nlp

Not applicable

66,728

25-Jun-2023

00:58

Not applicable

None

Not applicable

Bopomofo.nlp

Not applicable

82,172

25-Jun-2023

00:58

Not applicable

None

Not applicable

Ksc.nlp

Not applicable

116,756

25-Jun-2023

00:58

Not applicable

None

Not applicable

Mscorlib.dll

2.0.50727.8974

4,628,480

16-Jul-2023

00:20

x86

None

Not applicable

Normidna.nlp

Not applicable

59,342

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfc.nlp

Not applicable

45,794

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfd.nlp

Not applicable

39,284

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfkc.nlp

Not applicable

66,384

25-Jun-2023

00:58

Not applicable

None

Not applicable

Normnfkd.nlp

Not applicable

60,294

25-Jun-2023

00:58

Not applicable

None

Not applicable

Prc.nlp

Not applicable

83,748

25-Jun-2023

00:58

Not applicable

None

Not applicable

Prcp.nlp

Not applicable

83,748

25-Jun-2023

00:58

Not applicable

None

Not applicable

Sortkey.nlp

Not applicable

262,148

25-Jun-2023

00:58

Not applicable

None

Not applicable

Sorttbls.nlp

Not applicable

20,320

25-Jun-2023

00:58

Not applicable

None

Not applicable

Xjis.nlp

Not applicable

28,288

25-Jun-2023

00:58

Not applicable

None

Not applicable

Aspnet_wp.exe

2.0.50727.8974

34,760

16-Jul-2023

00:20

x86

SPN

X86_NETFX-ASP

Mscordacwks.dll

2.0.50727.8974

993,728

16-Jul-2023

00:20

x86

None

Not applicable

Mscorsvc.dll

2.0.50727.8793

231,992

24-Jul-2018

13:10

x86

None

Not applicable

Mscorwks.dll

2.0.50727.8974

6,414,232

16-Jul-2023

00:20

x86

None

Not applicable

Sos.dll

2.0.50727.8974

393,152

16-Jul-2023

00:20

x86

None

Not applicable

Webengine.dll

2.0.50727.8974

440,760

16-Jul-2023

00:20

x86

None

Not applicable

Wminet_utils.dll

2.0.50727.8766

116,896

12-Jul-2017

13:11

x86

None

Not applicable

System.web.extensions.dll

3.5.30729.8814

1,282,048

02-Nov-2018

13:14

x86

None

Not applicable

Presentationcore.dll

3.0.6920.8955

4,222,976

16-Jul-2023

00:21

x86

None

Not applicable

Presentationfontcache.exe.config

Not applicable

161

25-Jun-2023

01:01

Not applicable

None

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8955

1,741,208

16-Jul-2023

00:21

x86

None

Not applicable

System.data.dll

2.0.50727.8970

2,983,936

07-May-2023

00:20

x86

None

Not applicable

System.printing.dll

3.0.6920.8955

372,736

16-Jul-2023

00:21

x86

None

Not applicable

System.web.dll

2.0.50727.8974

5,292,032

16-Jul-2023

00:20

x86

None

Not applicable

Servicemonikersupport.dll

3.0.4506.8841

28,152

28-Mar-2020

13:37

x86

None

Not applicable

System.identitymodel.dll

3.0.4506.8841

446,464

28-Mar-2020

13:37

x86

None

Not applicable

System.runtime.serialization.dll

3.0.4506.8841

970,752

28-Mar-2020

13:37

x86

None

Not applicable

System.servicemodel.dll

3.0.4506.8841

5,996,544

28-Mar-2020

13:37

x86

None

Not applicable

Penimc.dll

3.0.6920.8955

72,128

16-Jul-2023

00:21

x86

None

Not applicable

Presentationframework.dll

3.0.6920.8955

5,292,032

16-Jul-2023

00:21

x86

None

Not applicable

Presentationhostdll.dll

3.0.6920.8955

134,552

16-Jul-2023

00:21

x86

None

Not applicable

Reachframework.dll

3.0.6920.8955

536,576

16-Jul-2023

00:21

x86

None

Not applicable

Windowsbase.dll

3.0.6920.8955

1,257,472

16-Jul-2023

00:21

x86

None

Not applicable

System.workflow.activities.dll

3.0.4203.8833

1,142,784

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.componentmodel.dll

3.0.4203.8833

1,638,400

06-Dec-2019

14:26

x86

None

Not applicable

System.workflow.runtime.dll

3.0.4203.8833

540,672

06-Dec-2019

14:26

x86

None

Not applicable

How to obtain help and support for this update

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.