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.
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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.
Method 2: Microsoft Download Center
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.
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Security update deployment 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 hash information
| 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 |
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 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 |
How to obtain help and support for this security update
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