Security and Quality Rollup for the .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, and 4.6.2 updates for Windows 8.1 and Windows Server 2012 R2: April 11, 2017

Note

Known issues in this security update

• After you apply this security update, the PowerShell v3.0+ stop-computer command fails. You get a "Privilege not held" error message. For more information, go to the following article in the Microsoft Knowledge Base:

  "Privilege not held" error with PowerShell "stop-computer" command: Workaround after April 2017 security updates from CVE-2017-0160

View products that this article applies to.

Summary

This update resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when the .NET Framework fails to properly validate input before loading libraries. An attacker who successfully exploits this vulnerability could take control of an affected system. The attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0160.

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.

• 4014567 Description of the Security and Quality Rollup for the .NET Framework 3.5 for Windows 8.1 and Windows Server 2012 R2: April 11, 2017

• 4014555 Description of the Security and Quality Rollup for the .NET Framework 4.5.2 for Windows 8.1 and Windows Server 2012 R2: April 11, 2017

• 4014551 Description of the Security and Quality Rollup for the .NET Framework 4.6 and 4.6.1 for Windows 8.1 and Windows Server 2012 R2: April 11, 2017

• 4014546 Description of the Security and Quality Rollup for the .NET Framework 4.6.2 for Windows 8.1 and Windows Server 2012 R2: April 11, 2017

How to obtain help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Windows Secure

Local support according to your country: International Support

Applies to

This article applies to the following:

• Microsoft .NET Framework 3.5, 4.5.2, 4.6, 4.6.1 and 4.6.2 when used with:

  • Windows Server 2012 R2

  • Windows 8.1