MS16-091: Security update for the .NET Framework: July 12, 2016

View products that this article applies to.

Summary

This update resolves a vulnerability in the Microsoft .NET Framework. The vulnerability could let sensitive information be disclosed if an attacker uploads a specially crafted XML file to a web-based application. To learn more about the vulnerability, see Microsoft Security Bulletin MS16-091.

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More Information

Important

All future security and nonsecurity 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.

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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.

Microsoft .NET Framework 4.6 and 4.6.1

3164024 MS16-091: Description of the security update for the .NET Framework 4.6 and 4.6.1 in Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2: July 12, 2016
3164023 MS16-091: Description of the security update for the .NET Framework 4.6 and 4.6.1 in Windows Server 2012: July 12, 2016
3164025 MS16-091: Description of the security update for the .NET Framework 4.6 in Windows Vista SP2 and Windows Server 2008 SP2 and the .NET Framework 4.6 and 4.6.1 in Windows 7 SP1 and Windows Server 2008 R2 SP1: July 12, 2016

Microsoft .NET Framework 4.5.2

3163291 MS16-091: Description of the security update for the .NET Framework 4.5.2 in Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2: July 12, 2016
3163250 MS16-091: Description of the security update for the .NET Framework 4.5.2 in Windows Server 2012: July 12, 2016
3163251 MS16-091: Description of the security update for the .NET Framework 4.5.2 in Windows Vista Service Pack 2, Windows Server 2008 Service Pack 2, Windows 7 Service Pack 1, and Windows Server 2008 R2 Service Pack 1: July 12, 2016

Microsoft .NET Framework 3.5 and 3.5.1

3163247 MS16-091: Description of the security update for the .NET Framework 3.5 in Windows 8.1 and Windows Server 2012 R2: July 12, 2016
3163246 MS16-091: Description of the security update for the .NET Framework 3.5 in Windows Server 2012: July 12, 2016
3163245 MS16-091: Description of the security update for the .NET Framework 3.5.1 in Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1: July 12, 2016

Microsoft .NET Framework 2.0

3163244 MS16-091: Description of the security update for the .NET Framework 2.0 Service Pack 2 in Windows Vista Service Pack 2 and Windows Server 2008 Service Pack 2: July 12, 2016

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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 Microsoft .NET Framework 2.0 Service Pack 2 on all supported 32-bit editions of Windows Vista: Windows6.0-KB3163244-x86.msu
	For Microsoft .NET Framework 4.5.2 when installed on all supported 32-bit editions of Windows Vista: NDP45-KB3163251-x86.exe
	For Microsoft .NET Framework 4.6 when installed on all supported 32-bit editions of Windows Vista: NDP46-KB3164025-x86.exe
	For Microsoft .NET Framework 2.0 Service Pack 2 on all supported x64-based editions of Windows Vista: Windows6.0-KB3163244-x64.msu
	For Microsoft .NET Framework 4.5.2 when installed on all supported x64-based editions of Windows Vista: NDP45-KB3163251-x64.exe
	For Microsoft .NET Framework 4.6 when installed on all supported x64-based editions of Windows Vista: NDP46-KB3164025-x64.exe
Installation switches	For Microsoft .NET Framework, see Microsoft Knowledge Base Article 2844699
Update log file	For Microsoft .NET Framework 2.0 Service Pack 2: Not applicable
	For Microsoft .NET Framework 4.5.2: KB3142033__-Microsoft .NET Framework [.NET target version]-MSP0.txt KB3163251__.html
	For Microsoft .NET Framework 4.6: KB3164025__-Microsoft .NET Framework 4.6/4.6.1-MSP0.txt KB3164025__.html
Restart requirement	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.
Registry key verification	For Microsoft .NET Framework 2.0 Service Pack 2 (3163244): A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this update.
	For Microsoft .NET Framework 4.5.2: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework [.NET target version]\KB3163251 ”ThisVersionInstalled” = “Y”
	For Microsoft .NET Framework 4.6: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework 4.6\ KB3164025 "ThisVersionInstalled" = "Y"

Windows Server 2008 (all editions)

Reference table

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

Security update file names	For Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2: Windows6.0-KB3163244-x86.msu
	For Microsoft .NET Framework 4.5.2 when installed on all supported 32-bit editions of Windows Server 2008 Service Pack 2: NDP45-KB3163251-x86.exe
	For Microsoft .NET Framework 4.6 when installed on all supported 32-bit editions of Windows Server 2008 Service Pack 2: NDP46-KB3164025-x86.exe
	For Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2: Windows6.0-KB3163244-x64.msu
	For Microsoft .NET Framework 4.5.2 on all supported x64-based editions of Windows Server 2008 Service Pack 2: NDP45-KB3163251-x64.exe
	For Microsoft .NET Framework 4.6 on all supported x64-based editions of Windows Server 2008 Service Pack 2: NDP46-KB3164025-x64.exe
	For Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-based Systems Service Pack 2: Windows6.0-KB3163244-ia64.msu
Installation switches	See Microsoft Knowledge Base Article 2844699
Update log file	For Microsoft .NET Framework 2.0 Service Pack 2: Not applicable
	For Microsoft .NET Framework 4.5.2: KB3142033__-Microsoft .NET Framework [.NET target version]-MSP0.txt KB3163251__.html
	For Microsoft .NET Framework 4.6: KB3164025__-Microsoft .NET Framework 4.6/4.6.1-MSP0.txt KB3164025__.html
Restart requirement	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.
Registry key verification	For Microsoft .NET Framework 2.0 Service Pack 2 (3163244): A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this update.
	For Microsoft .NET Framework 4.5.2: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework [.NET target version]\KB3163251 ”ThisVersionInstalled” = “Y”
	For Microsoft .NET Framework 4.6: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework 4.6\KB3164025 "ThisVersionInstalled" = "Y"

Windows 7 (all editions)

Reference table

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

Security update file name	For Microsoft .NET Framework 3.5.1 on all supported 32-bit editions of Windows 7 Service Pack 1: Windows6.1-KB3163245-x86.msu
	For Microsoft .NET Framework 4.5.2 when installed on all supported 32-bit editions of Windows 7 Service Pack 1: NDP45-KB3163251-x86.exe
	For Microsoft .NET Framework 4.6/4.6.1 when installed on all supported 32-bit editions of Windows 7 Service Pack 1: NDP46-KB3164025-x86.exe
	For Microsoft .NET Framework 3.5.1 on all supported x64-based editions of Windows 7 Service Pack 1: Windows6.1-KB3163245-x64.msu
	For Microsoft .NET Framework 4.5.2 when installed on all supported x64-based editions of Windows 7 Service Pack 1: NDP45-KB3163251-x64.exe
	For Microsoft .NET Framework 4.6/4.6.1 when installed on all supported x64-based editions of Windows 7 Service Pack 1: NDP46-KB3164025-x64.exe
Installation switches	See Microsoft Knowledge Base Article 2844699
Update log file	For Microsoft .NET Framework 3.5.1: Not applicable.
	For Microsoft .NET Framework 4.5.2: KB3163251__-Microsoft .NET Framework [.NET target version]-MSP0.txt KB3163251__.html
	For Microsoft .NET Framework 4.6/4.6.1: KB3164025__-Microsoft .NET Framework 4.6/4.6.1-MSP0.txt KB3164025__.html
Restart requirement	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.
Registry key verification	A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this update.
	For Microsoft .NET Framework 4.5.2: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework [.NET target version]\KB3163251 ”ThisVersionInstalled” = “Y”
	For Microsoft .NET Framework 4.6/4.6.1: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework 4.6\KB3164025 "ThisVersionInstalled" = "Y"

Windows Server 2008 R2 (all editions)

Reference table

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

Security update file name	For Microsoft .NET Framework 3.5.1 on all supported x64-based editions of Windows Server 2008 R2 Service Pack 1: Windows6.1-KB3163245-x64.msu
	For Microsoft .NET Framework 4.5.2 when installed on all supported x64-based editions of Windows Server 2008 R2 Service Pack 1: NDP45-KB3163251-x64.exe
	For Microsoft .NET Framework 4.6/4.6.1 when installed on all supported 32-bit editions of Windows 7 Service Pack 1: NDP46-KB3164025-x64.exe
	For Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-based Systems Service Pack 1: Windows6.1-KB3163245-ia64.msu
Installation switches	See Microsoft Knowledge Base Article 2844699
Update log file	For Microsoft .NET Framework 3.5.1: Not applicable
	For Microsoft .NET Framework 4.5.2: KB3142033__-Microsoft .NET Framework [.NET target version]-MSP0.txt KB3163251__.html
	For Microsoft .NET Framework 4.6/4.6.1: KB3164025__-Microsoft .NET Framework 4.6/4.6.1-MSP0.txt KB3164025__.html
Restart requirement	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.
Registry key verification	For Microsoft .NET Framework 3.5.1: A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this update.
	For Microsoft .NET Framework 4.5.2: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework [.NET target version]\KB3163251 ”ThisVersionInstalled” = “Y”
	For Microsoft .NET Framework 4.6/4.6.1: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Microsoft .NET Framework 4.6\KB3164025 "ThisVersionInstalled" = "Y"

Windows 8.1 (all editions)

Reference table

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

Security update file name	For Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit Systems: Windows8.1-KB3163247-x86.msu
	For Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit Systems: Windows8.1-KB3163291-x86.msu
	For Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for 32-bit Systems: Windows8.1-KB3164024-x86.msu
	For Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based Systems: Windows8.1-KB3163247-x64.msu
	For Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based Systems: Windows8.1-KB3163291-x64.msu
	For Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for x64-based Systems: Windows8.1-KB3164024-x64.msu
Installation switches	See Microsoft Knowledge Base Article 2844699
Restart requirement	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.
Registry key verification	Registry keys do not exist to validate the presence of these updates. Use WMI to detect for the presence of these updates.

Windows Server 2012 and Windows Server 2012 R2 (all editions)

Reference table

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

Security update file name	For Microsoft .NET Framework 3.5 on Windows Server 2012: Windows8-RT-KB3163246-x64.msu
	For Microsoft .NET Framework 4.5.2 on Windows Server 2012: Windows8-RT-KB3163250-x64.msu
	For Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012: Windows8-RT-KB3164023-x64.msu
	For Microsoft .NET Framework 3.5 on Windows Server 2012 R2: Windows8.1-KB3163247-x64.msu
	For Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2: Windows8.1-KB3163291-x64.msu
	For Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2: Windows8.1-KB3164024-x64.msu
Installation switches	See Microsoft Knowledge Base Article 2844699
Restart requirement	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.
Registry key verification	Registry keys do not exist to validate the presence of these updates. Use WMI to detect for the presence of these updates.

Windows RT 8.1 (all editions)

Reference table

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

Deployment	The 3163291 update is available via Windows Update only. The 3164024 update is available via Windows Update only.
Restart Requirement	A system restart is required after applying this security update.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File Information	See the individual Knowledge Base articles that are listed in the “Additional information about this security update” section.

Windows 10 (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 10: Windows10.0-KB3163912-x86.msu
	For all supported x64-based editions of Windows 10: Windows10.0-KB3163912-x64.msu
	For all supported 32-bit editions of Windows 10 Version 1511: Windows10.0-KB3172985-x86.msu
	For all supported x64-based editions of Windows 10 Version 1511: Windows10.0-KB3172985-x64.msu
Installation switches	For Microsoft .NET Framework, see Microsoft Knowledge Base Article 2844699
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	Click Control Panel, click Security, click View installed updates under Windows Update, and then select from the list of updates.
File information	See Microsoft Knowledge Base Article 3163912 See Microsoft Knowledge Base Article 3172985
Registry key verification	Registry keys do not exist to validate the presence of these updates.

How to obtain help and support for this security update

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Applies to

This article applies to the following:

Microsoft .NET Framework 4.6 and 4.6.1 when used with:
- Windows Server 2012 R2
- Windows 8.1
- Windows Server 2012
- Windows Server 2008 R2 Service Pack 1
- Windows 7 Service Pack 1
Microsoft .NET Framework 4.6 when used with:
- Windows Server 2008 Service Pack 2
- Windows Vista Service Pack 2
Microsoft .NET Framework 4.5.2 when used with:
- Windows Server 2012 R2
- Windows 8.1
- Windows RT 8.1
- Windows Server 2012
- Windows Server 2008 R2 Service Pack 1
- Windows 7 Service Pack 1
- Windows Server 2008 Service Pack 2
- Windows Vista Service Pack 2
Microsoft .NET Framework 3.5.1 when used with:
- Windows Server 2008 R2 Service Pack 1
- Windows 7 Service Pack 1
Microsoft .NET Framework 3.5 when used with:
- Windows Server 2012 R2
- Windows 8.1
- Windows Server 2012
Microsoft .NET Framework 2.0 Service Pack 2 when used with:
- Windows Server 2008 Service Pack 2
- Windows Vista Service Pack 2

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Applies to:

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Keywords: atdownload, kbbug, kbexpertiseinter, kbfix, kblangall, kbsecurity, kbsecbulletin, kbsecreview, kb, kbsecvulnerability, kbmustloc

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Article Info

Article ID	:	3170048
Revision	:	1
Created on	:	1/7/2017
Published on	:	7/12/2016
Exists online	:	False
Views	:	749

Microsoft KB Archive Search

MS16-091: Security update for the .NET Framework: July 12, 2016

Summary

More Information

Additional information about this security update

Microsoft .NET Framework 4.6 and 4.6.1

Microsoft .NET Framework 4.5.2

Microsoft .NET Framework 3.5 and 3.5.1

Microsoft .NET Framework 2.0

Windows Vista (all editions)

Windows Server 2008 (all editions)

Windows 7 (all editions)

Windows Server 2008 R2 (all editions)

Windows 8.1 (all editions)

Windows Server 2012 and Windows Server 2012 R2 (all editions)

Windows RT 8.1 (all editions)

Windows 10 (all editions)

Applies to

Applies to: