Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker with physical access inserts a specially crafted USB device into the system.To learn more about the vulnerability, see Microsoft Security Bulletin MS16-033.
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, seeGet 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 MS16-033 that corresponds to the version of Windows that you are running.
More Information
Important
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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.
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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.
Additional information about this security update
The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information.
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3139398 MS16-033: Description of the security update for Windows USB mass storage class driver: March 8, 2016
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3140745 Cumulative Update for Windows 10: March 8, 2016
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3140768 Cumulative update for Windows 10 Version 1511 and Windows Server 2016 Technical Preview 4: March 8, 2016
Note To comprehensively address CVE-2016-0133, Microsoft is releasing the April Windows 10 CU. Microsoft recommends that customers running affected versions of Microsoft Windows 10 software (3140745) should install KB3147461. See Microsoft Knowledge Base Article 3140745 for more information.
More Information
Windows Vista (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file names |
For all supported 32-bit editions of Windows Vista:Windows6.0-KB3139398-x86.msu |
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For all supported x64-based editions of Windows Vista:Windows6.0-KB3139398-x64.msu |
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Installation switches |
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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. |
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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. |
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File information |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2008 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file names |
For all supported 32-bit editions of Windows Server 2008:Windows6.0-KB3139398-x86.msu |
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For all supported x64-based editions of Windows Server 2008:Windows6.0-KB3139398-x64.msu |
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For all supported Itanium-based editions of Windows Server 2008:Windows6.0-KB3139398-ia64.msu |
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Installation switches |
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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. |
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File information |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows 7 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported 32-bit editions of Windows 7:Windows6.1-KB3139398-x86.msu |
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For all supported x64-based editions of Windows 7:Windows6.1-KB3139398-x64.msu |
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Installation switches |
|
|
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. |
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File information |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2008 R2 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported x64-based editions of Windows Server 2008 R2:Windows6.1-KB3139852-x64.msu |
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For all supported Itanium-based editions of Windows Server 2008 R2:Windows6.1-KB3139398-ia64.msu |
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Installation switches |
|
|
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 |
|
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows 8.1 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported 32-bit editions of Windows 8.1:Windows8.1-KB3139398-x86.msu |
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For all supported x64-based editions of Windows 8.1:Windows8.1-KB3139398-x64.msu |
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Installation switches |
|
|
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 |
|
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2012 and Windows Server 2012 R2 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported editions of Windows Server 2012:Windows8-RT-KB3139398-x64.msu |
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For all supported editions of Windows Server 2012 R2:Windows8.1-KB3139398-x64.msu |
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Installation switches |
|
|
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 |
|
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows RT 8.1 (all editions)Reference TableThe following table contains the security update information for this software.
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Deployment |
The update is available via Windows Update only. |
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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 |
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 |
Windows 10 (all editions)Reference TableThe following table contains the security update information for this software.
|
Security update file name |
For all supported 32-bit editions of Windows 10:Windows10.0-KB3140745-x86.msu |
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For all supported x64-based editions of Windows 10:Windows10.0-KB3140745-x64.msu |
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For all supported 32-bit editions of Windows 10 Version 1511:Windows10.0-KB3140768-x86.msu |
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For all supported x64-based editions of Windows 10 Version 1511:Windows10.0-KB3140768-x64.msu |
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|
Installation switches |
|
|
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. |
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File information |
See Microsoft Knowledge Base Article3124266 |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Help for installing updates: Support for Microsoft UpdateSecurity solutions for IT professionals: TechNet Security Troubleshooting and SupportHelp for protecting your Windows-based computer from viruses and malware: Virus Solution and Security CenterLocal support according to your country: International Support
