Summary

This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker runs a specially crafted application that connects to an iSNS Server and then issues malicious requests to the server.

To learn more about the vulnerability, see Microsoft Security Bulletin MS17-012.

More Information

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.

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 turn on automatic updating, see Windows Update FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

More Information


Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

File Information

File name

SHA1 hash

SHA256 hash

Windows6.0-KB4012021-x64.msu

651185596D580B5DF86FFFE44A1C6C4AB93D1454

EA5486FBABCAB78CAEB6A665F04BB56F53D08F9C5A6422FB32B2B2835A658C76

Windows6.0-KB4012021-x86.msu

266D72870FE4AC9ED0C4894426C581E2B8772F2E

7CE1A13935114C7FC48F5FB5F789663F58211B6A8D06C28E4DAD8FD9F03E8E7C



File name

File version

File size

Date

Time

Platform

Isns.mof

Not applicable

10,687

11-Apr-2009

02:12

Not applicable

Isnscli.exe

6.0.6002.18005

29,696

11-Apr-2009

07:10

x64

Isnsdll.dll

6.0.6002.18005

58,880

11-Apr-2009

07:11

x64

Isnssrv.dll

6.0.6002.19741

95,232

09-Feb-2017

17:21

x64

Isnsui.exe

6.0.6002.18005

40,448

11-Apr-2009

07:10

x64

Isnsuid.dll

6.0.6002.18005

66,048

11-Apr-2009

07:11

x64

Isnswmi.dll

6.0.6002.18005

48,640

11-Apr-2009

07:11

x64

Isns.mof

Not applicable

10,687

09-Feb-2017

14:24

Not applicable

Isnscli.exe

6.0.6002.24065

30,208

09-Feb-2017

16:00

x64

Isnsdll.dll

6.0.6002.24065

58,880

09-Feb-2017

17:40

x64

Isnssrv.dll

6.0.6002.24065

95,232

09-Feb-2017

17:40

x64

Isnsui.exe

6.0.6002.24065

40,448

09-Feb-2017

16:00

x64

Isnsuid.dll

6.0.6002.24065

66,048

09-Feb-2017

17:40

x64

Isnswmi.dll

6.0.6002.24065

48,640

09-Feb-2017

17:40

x64

File name

File version

File size

Date

Time

Platform

Isns.mof

Not applicable

10,687

11-Apr-2009

02:04

Not applicable

Isnscli.exe

6.0.6002.18005

25,600

11-Apr-2009

06:27

x86

Isnsdll.dll

6.0.6002.18005

52,224

11-Apr-2009

06:28

x86

Isnssrv.dll

6.0.6002.19741

70,144

09-Feb-2017

17:04

x86

Isnsui.exe

6.0.6002.18005

39,936

11-Apr-2009

06:27

x86

Isnsuid.dll

6.0.6002.18005

63,488

11-Apr-2009

06:28

x86

Isnswmi.dll

6.0.6002.18005

36,352

11-Apr-2009

06:28

x86

Isns.mof

Not applicable

10,687

09-Feb-2017

14:24

Not applicable

Isnscli.exe

6.0.6002.24065

26,112

09-Feb-2017

15:36

x86

Isnsdll.dll

6.0.6002.24065

52,224

09-Feb-2017

16:25

x86

Isnssrv.dll

6.0.6002.24065

70,144

09-Feb-2017

16:25

x86

Isnsui.exe

6.0.6002.24065

39,936

09-Feb-2017

15:36

x86

Isnsuid.dll

6.0.6002.24065

63,488

09-Feb-2017

16:25

x86

Isnswmi.dll

6.0.6002.24065

36,352

09-Feb-2017

16:25

x86

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