Summary

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker logs on to a target system and runs a specially crafted application.



To learn more about the vulnerability, see Microsoft Security Bulletin MS16-048.

More Information

Important

  • All future security and non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.

  • 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.

Known issues in this security update

  • After installing this security update, some systems that are running third party software may display a 0x00000100 Stop error message after the computer is restarted.



    This problem may occur if the third party software has replaced the winload.exe file. Software that is known to do this includes imaging software from StorageCraft.



    Contact the manufacturer of you software for more information about how to resolve this problem.


    The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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
Get security updates automatically.

Note For Windows RT 8.1, this update is available through Windows Update only.

You can obtain the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS16-048 that corresponds to the version of Windows that you are running.

Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

File Information

File name

SHA1 hash

SHA256 hash

Windows8.1-KB3146723-x64.msu

5AAE2A7642E87B2881D7337EF736EAEE679F907A

7419BA7ECB7BCD962ECE7AEF269BEE633F6CBC4F4778D5F23CD3C7F7E8FC270F

Windows8.1-KB3146723-x86.msu

5F3689532BF8969D68F21B7B3F82B111F8232F43

4FD9572130014B0AE6A075AC0DB772CEB350EBD385C867E4AB71642F39EC29EE

Windows8-RT-KB3146723-x64.msu

682AE0931C3FA2AFA4E988B8FD08249F15E1D977

06D3E3F90C3863E7A970757446DD87CC47C5EF7F08F406F9B49FF5C988158D86

Windows8-RT-KB3146723-x64_New58.msu

B629DB9F3EBB85B40A61A1CC5DEA13C11A124B6C

DB652213B70BA0D0CC19ADD967BA933465FE76FD0C74D785458CB8172461B6E0


The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows 8.1 and Windows Server 2012 R2 file information

Notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.17 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

Service branch

Chs_boot.ttf

Not applicable

3,695,655

03-Mar-2016

19:28

Not applicable

Not applicable

Msyhn_boot.ttf

Not applicable

150,727

03-Mar-2016

19:28

Not applicable

Not applicable

Msyh_boot.ttf

Not applicable

154,833

03-Mar-2016

19:28

Not applicable

Not applicable

Cht_boot.ttf

Not applicable

3,878,347

03-Mar-2016

19:28

Not applicable

Not applicable

Msjhn_boot.ttf

Not applicable

161,491

03-Mar-2016

19:28

Not applicable

Not applicable

Msjh_boot.ttf

Not applicable

163,498

03-Mar-2016

19:28

Not applicable

Not applicable

Segmono_boot.ttf

Not applicable

44,623

03-Mar-2016

19:28

Not applicable

Not applicable

Segoen_slboot.ttf

Not applicable

85,691

03-Mar-2016

19:28

Not applicable

Not applicable

Segoe_slboot.ttf

Not applicable

86,007

03-Mar-2016

19:28

Not applicable

Not applicable

Wgl4_boot.ttf

Not applicable

49,027

03-Mar-2016

19:28

Not applicable

Not applicable

Jpn_boot.ttf

Not applicable

1,985,803

03-Mar-2016

19:28

Not applicable

Not applicable

Meiryon_boot.ttf

Not applicable

141,491

03-Mar-2016

19:28

Not applicable

Not applicable

Meiryo_boot.ttf

Not applicable

143,108

03-Mar-2016

19:28

Not applicable

Not applicable

Kor_boot.ttf

Not applicable

2,372,935

03-Mar-2016

19:28

Not applicable

Not applicable

Malgunn_boot.ttf

Not applicable

174,367

03-Mar-2016

19:28

Not applicable

Not applicable

Malgun_boot.ttf

Not applicable

176,812

03-Mar-2016

19:28

Not applicable

Not applicable

Winload.efi

6.3.9600.18258

1,663,192

03-Mar-2016

19:27

Not applicable

Not applicable

Winload.exe

6.3.9600.18258

1,523,216

03-Mar-2016

19:27

x64

Not applicable

Winresume.efi

6.3.9600.18258

1,490,128

03-Mar-2016

19:27

Not applicable

Not applicable

Winresume.exe

6.3.9600.18258

1,358,960

03-Mar-2016

19:27

x64

Not applicable

Basesrv.dll

6.3.9600.18258

59,392

03-Mar-2016

16:13

x64

Not applicable

Csrsrv.dll

6.3.9600.17933

59,392

13-Jul-2015

19:46

x64

Not applicable

Ntdll.dll

6.3.9600.18258

1,737,088

03-Mar-2016

19:27

x64

Not applicable

Ntoskrnl.exe

6.3.9600.18258

7,452,512

03-Mar-2016

19:28

x64

Not applicable

Microsoft-windows-system-events.dll

6.3.9600.18258

246,784

03-Mar-2016

18:29

x64

Not applicable

Krnlprov.dll

6.3.9600.18258

46,592

03-Mar-2016

18:06

x64

Not applicable

Krnlprov.mof

Not applicable

14,840

22-Aug-2013

06:51

Not applicable

Not applicable

Ntvdm64.dll

6.3.9600.18146

16,896

21-Nov-2015

18:32

x64

AMD64_MICROSOFT-WINDOWS-WOW

Wow64.dll

6.3.9600.17734

285,184

20-Mar-2015

04:10

x64

AMD64_MICROSOFT-WINDOWS-WOW

Wow64cpu.dll

6.3.9600.17734

13,312

20-Mar-2015

04:10

x64

AMD64_MICROSOFT-WINDOWS-WOW

Ntdll.dll

6.3.9600.18258

1,501,496

03-Mar-2016

18:38

x86

Not applicable

Acwow64.dll

6.3.9600.17734

37,376

20-Mar-2015

03:06

x86

WOW64_MICROSOFT-WINDOWS-WOW

Instnm.exe

6.3.9600.17475

8,704

29-Oct-2014

01:13

x86

WOW64_MICROSOFT-WINDOWS-WOW

Ntvdm64.dll

6.3.9600.18146

14,336

21-Nov-2015

17:50

x86

WOW64_MICROSOFT-WINDOWS-WOW

Setup16.exe

3.1.0.1918

25,600

29-Oct-2014

01:13

x86

WOW64_MICROSOFT-WINDOWS-WOW

User.exe

6.3.9600.17475

4,096

29-Oct-2014

01:14

x86

WOW64_MICROSOFT-WINDOWS-WOW

Wow32.dll

6.3.9600.17475

5,632

29-Oct-2014

01:15

x86

WOW64_MICROSOFT-WINDOWS-WOW

For all supported x86-based versions

File name

File version

File size

Date

Time

Platform

Chs_boot.ttf

Not applicable

3,695,658

03-Mar-2016

18:43

Not applicable

Msyhn_boot.ttf

Not applicable

150,730

03-Mar-2016

18:43

Not applicable

Msyh_boot.ttf

Not applicable

154,831

03-Mar-2016

18:43

Not applicable

Cht_boot.ttf

Not applicable

3,878,350

03-Mar-2016

18:43

Not applicable

Msjhn_boot.ttf

Not applicable

161,495

03-Mar-2016

18:43

Not applicable

Msjh_boot.ttf

Not applicable

163,499

03-Mar-2016

18:43

Not applicable

Segmono_boot.ttf

Not applicable

44,623

03-Mar-2016

18:43

Not applicable

Segoen_slboot.ttf

Not applicable

85,688

03-Mar-2016

18:43

Not applicable

Segoe_slboot.ttf

Not applicable

86,007

03-Mar-2016

18:43

Not applicable

Wgl4_boot.ttf

Not applicable

49,024

03-Mar-2016

18:39

Not applicable

Jpn_boot.ttf

Not applicable

1,985,803

03-Mar-2016

18:43

Not applicable

Meiryon_boot.ttf

Not applicable

141,491

03-Mar-2016

18:43

Not applicable

Meiryo_boot.ttf

Not applicable

143,111

03-Mar-2016

18:43

Not applicable

Kor_boot.ttf

Not applicable

2,372,935

03-Mar-2016

18:43

Not applicable

Malgunn_boot.ttf

Not applicable

174,367

03-Mar-2016

18:43

Not applicable

Malgun_boot.ttf

Not applicable

176,815

03-Mar-2016

18:43

Not applicable

Winload.efi

6.3.9600.18258

1,396,696

03-Mar-2016

18:38

Not applicable

Winload.exe

6.3.9600.18258

1,285,608

03-Mar-2016

18:38

x86

Winresume.efi

6.3.9600.18258

1,272,192

03-Mar-2016

18:38

Not applicable

Winresume.exe

6.3.9600.18258

1,172,000

03-Mar-2016

18:38

x86

Basesrv.dll

6.3.9600.18258

50,688

03-Mar-2016

16:11

x86

Csrsrv.dll

6.3.9600.17933

48,640

13-Jul-2015

19:27

x86

Ntdll.dll

6.3.9600.18258

1,471,552

03-Mar-2016

18:38

x86

Ntoskrnl.exe

6.3.9600.18258

5,764,448

03-Mar-2016

18:43

Not applicable

Microsoft-windows-system-events.dll

6.3.9600.18258

246,784

03-Mar-2016

17:49

x86

Krnlprov.dll

6.3.9600.18258

38,912

03-Mar-2016

17:30

x86

Krnlprov.mof

Not applicable

14,840

21-Aug-2013

23:46

Not applicable

Windows Server 2012 file information

Notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.2.920 0.17xxx

    Windows 8, Windows RT, or Windows Server 2012

    RTM

    GDR

    6.2.920 0.21xxx

    Windows 8, Windows RT, or Windows Server 2012

    RTM

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

Basesrv.dll

6.2.9200.21793

54,272

03-Mar-2016

21:48

x64

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Advapi32.dll

6.2.9200.21820

895,488

29-Mar-2016

21:47

x64

None

Not applicable

Winload.efi

6.2.9200.21638

1,405,408

22-Sep-2015

21:46

Not applicable

None

Not applicable

Winload.exe

6.2.9200.21638

1,273,184

22-Sep-2015

21:46

x64

None

Not applicable

Winresume.efi

6.2.9200.20726

1,217,352

25-May-2013

00:17

Not applicable

None

Not applicable

Winresume.exe

6.2.9200.20726

1,093,904

25-May-2013

00:17

x64

None

Not applicable

Basesrv.dll

6.2.9200.21820

54,272

29-Mar-2016

21:47

x64

None

Not applicable

Csrsrv.dll

6.2.9200.21548

48,128

11-Jul-2015

18:07

x64

None

Not applicable

Ksecdd.sys

6.2.9200.21473

100,184

02-May-2015

06:23

x64

None

Not applicable

Lsass.exe

6.2.9200.20521

35,840

20-Sep-2012

06:33

x64

None

Not applicable

Sspicli.dll

6.2.9200.21703

164,352

17-Nov-2015

08:00

x64

None

Not applicable

Sspisrv.dll

6.2.9200.20521

27,648

20-Sep-2012

06:32

x64

None

Not applicable

Cng.sys

6.2.9200.21637

566,072

22-Sep-2015

13:43

x64

None

Not applicable

Ksecpkg.sys

6.2.9200.21703

171,352

17-Nov-2015

09:52

x64

None

Not applicable

Lsasrv.dll

6.2.9200.21820

1,280,000

29-Mar-2016

21:48

x64

None

Not applicable

Adtschema.dll

6.2.9200.21289

719,360

10-Nov-2014

04:43

x64

None

Not applicable

Msaudite.dll

6.2.9200.21269

146,944

11-Oct-2014

05:38

x64

None

Not applicable

Msobjs.dll

6.2.9200.16384

61,952

26-Jul-2012

02:36

x64

None

Not applicable

Ntdll.dll

6.2.9200.21820

1,821,704

30-Mar-2016

01:32

x64

None

Not applicable

Ocspsvcctrs.ini

Not applicable

2,960

26-Jul-2012

05:07

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,134

26-Jul-2012

08:00

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,918

26-Jul-2012

04:43

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,210

26-Jul-2012

07:59

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,098

26-Jul-2012

08:00

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,028

26-Jul-2012

07:59

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,140

26-Jul-2012

05:21

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,642

26-Jul-2012

08:11

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,576

26-Jul-2012

05:20

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,026

26-Jul-2012

07:36

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,028

26-Jul-2012

07:48

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,188

26-Jul-2012

05:30

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,126

26-Jul-2012

05:08

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,064

26-Jul-2012

07:49

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

3,092

26-Jul-2012

07:52

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,828

26-Jul-2012

05:12

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,464

26-Jul-2012

08:05

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,480

26-Jul-2012

05:13

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,460

26-Jul-2012

08:11

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvc.exe

6.2.9200.21345

272,384

15-Jan-2015

05:27

x64

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.h

Not applicable

1,569

02-Jun-2012

14:34

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ocspsvcctrs.ini

Not applicable

2,918

02-Jun-2012

14:34

Not applicable

SPS

AMD64_MICROSOFT-WINDOWS-OCSP

Ntoskrnl.exe

6.2.9200.21821

6,938,464

30-Mar-2016

01:34

x64

None

Not applicable

Credssp.dll

6.2.9200.21703

20,480

17-Nov-2015

07:59

x64

SP_

AMD64_MICROSOFT-WINDOWS-SECURITY-CREDSSP

Tspkg.dll

6.2.9200.21703

94,720

17-Nov-2015

08:01

x64

SP_

AMD64_MICROSOFT-WINDOWS-SECURITY-CREDSSP

Tspkg.mof

Not applicable

964

02-Jun-2012

14:33

Not applicable

SP_

AMD64_MICROSOFT-WINDOWS-SECURITY-CREDSSP

Wdigest.dll

6.2.9200.21703

208,896

17-Nov-2015

08:01

x64

None

Not applicable

Kerberos.dll

6.2.9200.21820

830,464

29-Mar-2016

21:48

x64

None

Not applicable

Msv1_0.dll

6.2.9200.21820

317,952

29-Mar-2016

21:48

x64

None

Not applicable

Shcore.dll

6.2.9200.21703

590,848

17-Nov-2015

08:00

x64

None

Not applicable

Mrxsmb10.sys

6.2.9200.21529

281,600

25-Jun-2015

18:52

x64

None

Not applicable

Mrxsmb20.sys

6.2.9200.21548

205,312

11-Jul-2015

17:07

x64

None

Not applicable

Mrxsmb.sys

6.2.9200.21342

396,800

06-Jan-2015

23:17

x64

None

Not applicable

Lsm.dll

6.2.9200.21703

439,808

17-Nov-2015

08:00

x64

None

Not applicable

Workerdd.dll

6.2.9200.21012

14,848

12-Apr-2014

06:58

x64

None

Not applicable

Usercpl.dll

6.2.9200.21703

1,043,968

17-Nov-2015

08:01

x64

None

Not applicable

Usercpl.ptxml

Not applicable

789

11-Oct-2012

00:40

Not applicable

None

Not applicable

Winlogon.exe

6.2.9200.21703

578,048

17-Nov-2015

08:01

x64

None

Not applicable

Sspicli.dll

6.2.9200.20984

99,840

10-Mar-2014

01:34

x86

None

Not applicable

Ntdll.dll

6.2.9200.21821

1,413,120

30-Mar-2016

00:14

x86

None

Not applicable

Wdigest.dll

6.2.9200.21703

176,640

17-Nov-2015

08:09

x86

None

Not applicable

Kerberos.dll

6.2.9200.21821

666,624

29-Mar-2016

23:58

x86

None

Not applicable

Msv1_0.dll

6.2.9200.21821

274,944

29-Mar-2016

23:58

x86

None

Not applicable

Advapi32.dll

6.2.9200.21821

704,000

29-Mar-2016

23:57

x86

None

Not applicable

Adtschema.dll

6.2.9200.21289

719,360

10-Nov-2014

03:40

x86

None

Not applicable

Msaudite.dll

6.2.9200.21269

146,944

11-Oct-2014

04:35

x86

None

Not applicable

Msobjs.dll

6.2.9200.16384

61,952

26-Jul-2012

02:47

x86

None

Not applicable

Credssp.dll

6.2.9200.21703

17,408

17-Nov-2015

08:08

x86

SP_

X86_MICROSOFT-WINDOWS-SECURITY-CREDSSP

Tspkg.dll

6.2.9200.21703

76,800

17-Nov-2015

08:09

x86

SP_

X86_MICROSOFT-WINDOWS-SECURITY-CREDSSP

Tspkg.mof

Not applicable

964

02-Jun-2012

14:33

Not applicable

SP_

X86_MICROSOFT-WINDOWS-SECURITY-CREDSSP

Shcore.dll

6.2.9200.21703

460,800

17-Nov-2015

08:09

x86

None

Not applicable

Usercpl.dll

6.2.9200.21703

961,536

17-Nov-2015

08:09

x86

None

Not applicable

Usercpl.ptxml

Not applicable

789

11-Oct-2012

00:42

Not applicable

None

Not applicable


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