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Summary

This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if Windows Media Center opens a specially crafted Media Center link (.mcl) file that references malicious code. An attacker who successfully exploits this vulnerability could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less affected than those who operate with administrative user rights.

To learn more about the vulnerability, see Microsoft Security Bulletin MS15-100.

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
Stay up-to-date for more secure web browsing.

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 MS15-100 that corresponds to the version of Windows that you are running.

More Information

Windows Vista (all editions)Reference Table

The following table contains the security update information for this software.

Security update file names

For all supported 32-bit editions of Windows Vista:
Windows6.0-KB3087918-x86.msu


For all supported x64-based editions of Windows Vista:
Windows6.0-KB3087918-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a system restart. If the required files are being used, this update will require a system restart. If this behavior occurs, you receive a message that advises you to restart your system.

Removal information

WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and select from the list of updates.

File information

See the file information section.

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows 7 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported 32-bit editions of Windows 7:
Windows6.1-KB3087918-x86.msu


For all supported x64-based editions of Windows 7:
Windows6.1-KB3087918-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a system restart. If the required files are being used, this update will require a system restart. If this behavior occurs, you receive a message that advises you to restart your system.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates, and select from the list of updates.

File information

See the file information section.

Registry key verification

Note A registry key does not exist to validate the presence of this update.

Windows 8 and Windows 8.1 (all editions)Reference Table

The following table contains the security update information for this software.

Security update file name

For all supported 32-bit editions of Windows 8:
Windows8-RT-KB3087918-x86.msu


For all supported x64-based editions of Windows 8:
Windows8-RT-KB3087918-x64.msu


For all supported 32-bit editions of Windows 8.1:
Windows8.1-KB3087918-x86.msu


For all supported x64-based editions of Windows 8.1:
Windows8.1-KB3087918-x64.msu

Installation switches

See Microsoft Knowledge Base Article 934307

Restart requirement

In some cases, this update does not require a system restart. If the required files are being used, this update will require a system restart. If this behavior occurs, you receive a message that advises you to restart your system.

Removal information

To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.

File information

See the file information section.

Registry key verification

Note A registry key does not exist to validate the presence of this update.


File name

SHA1 hash

SHA256 hash

Windows6.1-KB3087918-x86.msu

21020BF7ECC617FFF6C248A22E00C6C488A41416

6BB97317BF126D54D710BF6D5C70E3F7C3E3EEB32F286B07D9085D658C1DF972

Windows6.1-KB3087918-x64.msu

695A546FC6E6C211FE59A4EA93FF9CD59049B361

78BB9CF0DA542DB1EB50D37BAF3EF340AB8345CBD79BAABCC27117F40689D9A3

Windows8-RT-KB3087918-x86.msu

75F93A0B6095866FA5E77732879DE2094B889133

DABBC8155AF38E44AD38DDC954911C337C56433241328B3342864802BC7282C5

Windows8-RT-KB3087918-x64.msu

9478941DFAF0AB45CDFE96F3A2235ACCC4EDE767

1E3D4E4D2F4D97045581C203851076804FE17AF3AB36CFE06E36AE98B5F21928

Windows6.0-KB3087918-x86.msu

3421AE5504D9F6D56318B5CDDD34A330C71BDEC4

A3518B2FD1275580C489F45D16ABAD6EB5001832E0AC437FD0EA18A13B61B8AC

Windows6.0-KB3087918-x64.msu

F711944EE823859F198B3BF73674B795F6888050

3152DEE90D49758C0A34522C3898431E3C87BEBA7D52D9567130698C291729BF

Windows6.1-KB3087918-v2-x64.msu

E840A08DFC45D29A9B63023C00D0F3DF28F2EDED

FBF0F4A93C97D3CE5EC64E106EED9F33D18DD56BF9D91D7CEC95EB3277ECA8B1

Windows6.1-KB3087918-v2-x86.msu

AFF938D189153F0A9BAC822FABACFD574288C828

700A886EB921DA89D67F4F4C6AE1DCA0C2BC64246D2A7FDAF64AF5CA2F5889FA


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 times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.


Windows Vista file information

  • The files that apply to a specific product, milestone (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

    6.0.6002.19xxx

    Windows Vista SP2

    SP2

    GDR

    6.0.6002.23xxx

    Windows Vista SP2

    SP2

    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.

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

For all supported x86-based versions of Windows Vista

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.0.6002.19478

4,059,136

14-Aug-2015

13:44

x86

Ehshell.dll

6.0.6002.23788

4,059,136

14-Aug-2015

13:44

x86

For all supported x64-based versions of Windows Vista

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.0.6002.19478

4,059,136

14-Aug-2015

13:48

x86

Ehshell.dll

6.0.6002.23788

4,059,136

14-Aug-2015

13:48

x86

Windows 7 file information

  • 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

    6.1.7601.18xxx

    Windows 7

    SP1

    GDR

    6.1.7601.22xxx

    Windows 7

    SP1

    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.

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

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.1.7601.18968

6,307,840

13-Aug-2015

17:50

x86

Ehshell.dll

6.1.7601.23171

6,307,840

13-Aug-2015

19:29

x86

For all supported x64-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.1.7601.18968

6,307,840

13-Aug-2015

17:50

x86

Ehshell.dll

6.1.7601.23171

6,307,840

13-Aug-2015

19:29

x86

For all supported x86-based versions of Windows 7 Embedded

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.1.7600.16821

5,705,424

30-Sep-2015

17:15

x86

Ehshell.dll

6.1.7600.16821

5,705,424

30-Sep-2015

17:12

x86

For all supported x64-based versions of Windows 7 Embedded

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.1.7600.16821

5,705,424

30-Sep-2015

17:27

x86

Ehshell.dll

6.1.7600.16821

5,705,424

30-Sep-2015

17:36

x86

Windows 8 file information

  • 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 0.16 xxx

    Windows 8

    RTM

    GDR

    6.2.920 0.20 xxx

    Windows 8

    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.

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

For all supported x86-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.2.9200.17486

6,315,520

15-Aug-2015

00:32

x86

Ehshell.dll

6.2.9200.21601

6,315,520

15-Aug-2015

06:22

x86

For all supported x64-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.2.9200.17486

6,315,520

15-Aug-2015

00:32

x86

Ehshell.dll

6.2.9200.21601

6,315,520

15-Aug-2015

06:22

x86

Windows 8.1 file information

  • 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

    6.3.920 0.16 xxx

    Windows 8.1

    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.

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


For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.3.9600.18015

6,315,520

17-Aug-2015

18:39

x86

For all supported x64-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Ehshell.dll

6.3.9600.18015

6,315,520

17-Aug-2015

18:39

x86


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

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