Summary
This security update fixes vulnerabilities in the VBScript scripting engine in Windows. The more severe of the vulnerabilities could allow remote code execution if an attacker hosts a specially crafted website that's designed to exploit the vulnerabilities through Internet Explorer (or if an attacker leverages a compromised website or a website that accepts or hosts user-provided content or advertisements) and then convinces a user to view the website. An attacker could also embed an ActiveX control marked as "safe for initialization" in an application or Microsoft Office document that uses the Internet Explorer rendering engine to direct the user to the specially crafted website.
To learn more about the vulnerability, see Microsoft Security Bulletin MS15-126.
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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 get 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 and Windows RT 8.1, this update is available through Windows Update only.
Method 2: Microsoft Download Center
You can get 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 MS15-126 that corresponds to the version of Windows that you're running.
More Information
How to get 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
File Information
File hash information
| File name | SHA1 hash | SHA256 hash |
|---|---|---|
| Windows6.0-KB3105579-x86.msu | BFBF538746B04FEEC540809027D4EC7DBB48C692 | D974C6E9EF1BB0766544C94908D8EED48CC022C3AC8E21511231195933D0032B |
| Windows6.0-KB3105579-ia64.msu | 4BF27B82067AB21A41C3DFB041FD060DE8EEB65F | 161E681DEAEF8FC786717C9C09CB62183CAE61FA579AD69514C33031A2AE7D4D |
| Windows6.0-KB3105579-x64.msu | 692DF3729689645ACCA65384EAB576F693067C57 | 69A461747AA217F00FB20CAC71735CDFE820874ECE6D40AB477F9D2A84A4E7BB |
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). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.
Windows Vista and Windows Server 2008 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 6.0.600 2.19xxx Windows Vista or Windows Server 2008 SP2 GDR 6.0.600 2.23xxx Windows Vista or Windows Server 2008 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.
The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Jscript.dll | 5.7.6002.19549 | 516,096 | 13-Nov-2015 | 16:56 | x86 |
| Jscript.dll | 5.7.6002.23859 | 516,096 | 13-Nov-2015 | 16:32 | x86 |
| Vbscript.dll | 5.7.6002.19549 | 434,176 | 13-Nov-2015 | 16:57 | x86 |
| Vbscript.dll | 5.7.6002.23859 | 434,176 | 13-Nov-2015 | 16:33 | x86 |
For all supported ia64-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Jscript.dll | 5.7.6002.19549 | 1,394,688 | 13-Nov-2015 | 16:27 | IA-64 |
| Jscript.dll | 5.7.6002.23859 | 1,395,200 | 13-Nov-2015 | 16:02 | IA-64 |
| Vbscript.dll | 5.7.6002.19549 | 1,173,504 | 13-Nov-2015 | 16:29 | IA-64 |
| Vbscript.dll | 5.7.6002.23859 | 1,175,040 | 13-Nov-2015 | 16:03 | IA-64 |
| Jscript.dll | 5.7.6002.19549 | 516,096 | 13-Nov-2015 | 16:56 | x86 |
| Jscript.dll | 5.7.6002.23859 | 516,096 | 13-Nov-2015 | 16:32 | x86 |
| Vbscript.dll | 5.7.6002.19549 | 434,176 | 13-Nov-2015 | 16:57 | x86 |
| Vbscript.dll | 5.7.6002.23859 | 434,176 | 13-Nov-2015 | 16:33 | x86 |
For all supported x64-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Jscript.dll | 5.7.6002.19549 | 755,200 | 13-Nov-2015 | 16:42 | x64 |
| Jscript.dll | 5.7.6002.23859 | 755,200 | 13-Nov-2015 | 16:37 | x64 |
| Vbscript.dll | 5.7.6002.19549 | 582,656 | 13-Nov-2015 | 16:43 | x64 |
| Vbscript.dll | 5.7.6002.23859 | 583,168 | 13-Nov-2015 | 16:38 | x64 |
| Jscript.dll | 5.7.6002.19549 | 516,096 | 13-Nov-2015 | 16:56 | x86 |
| Jscript.dll | 5.7.6002.23859 | 516,096 | 13-Nov-2015 | 16:32 | x86 |
| Vbscript.dll | 5.7.6002.19549 | 434,176 | 13-Nov-2015 | 16:57 | x86 |
| Vbscript.dll | 5.7.6002.23859 | 434,176 | 13-Nov-2015 | 16:33 | x86 |