Microsoft Security Update Summary (May 12, 2020)

[German]On May 12, 2020, Microsoft released security updates for Windows clients and servers, for Office, Internet Explorer, etc. Here you will find a compact overview of these updates.


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A list of the updates can be found on this Microsoft page. Details about the update packages for Windows, Office, etc. are available in separate blog posts. 

Servicing Stack Updates

Microsoft now publishes an overview of all current Servicing Stack Updates (SSUs). The list of SSUs can be found under ADV990001 (it is not always up to date, but we have SSU KB4555449 for Windows 7).

Notes on the updates

All Windows 10 updates are cumulative. The monthly patchday update includes all security fixes for Windows 10 and all non-security related fixes until the patchday. In addition to the security patches for the vulnerabilities, the updates contain defense-in-depth updates to improve security.

Windows 7 SP1 has been out of support since January 2020. Only customers with an ESU license (or bypass measures) will still receive updates. Updates can also be downloaded from the Microsoft Update Catalog. The updates for Windows RT 8.1 and Microsoft Office RT are only available through Windows Update.

Information about the support period for Windows 10 can be found in the Windows Lifecycle Facts Sheet. But Microsoft postphoned the end of life for Windows 10 Version 1709 (Enterprise/Education) and Windows 10 Version 1809 (Home and Pro) until October 2020, due to the corona crisis.


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The May 2020 security updates cover 123 vulnerabilities in Microsoft products. 16 fixes are rated critical, 95 important and six moderate or low. A list of all security updates including CVEs can be found on the Zero Day Initiative blog. Talos has also published a summary here (details are covered separately in blog posts here). 

Also note the discussion here (German). When trying to install the .NET framework update KB4556399, some users get the error code 643.

Critical Security Updates

Internet Explorer 11
ChakraCore
Microsoft Edge (EdgeHTML-based)
Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1709 for 32-bit Systems
Windows 10 Version 1709 for ARM64-based Systems
Windows 10 Version 1709 for x64-based Systems
Windows 10 Version 1803 for 32-bit Systems
Windows 10 Version 1803 for ARM64-based Systems
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1903 for 32-bit Systems
Windows 10 Version 1903 for ARM64-based Systems
Windows 10 Version 1903 for x64-based Systems
Windows 10 Version 1909 for 32-bit Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 1909 for x64-based Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows RT 8.1
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 for Itanium-Based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core
installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server, version 1803 (Server Core Installation)
Windows Server, version 1903 (Server Core installation)
Windows Server, version 1909 (Server Core installation)
.NET Core 2.1
.NET Core 3.1
.NET Core 5.0
ASP.NET Core 3.1
Microsoft .NET Framework 2.0 Service Pack 2
Microsoft .NET Framework 3.0 Service Pack 2
Microsoft .NET Framework 3.5
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2
Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2
Microsoft .NET Framework 3.5 AND 4.7.2
Microsoft .NET Framework 3.5 AND 4.8
Microsoft .NET Framework 3.5.1
Microsoft .NET Framework 4.5.2
Microsoft .NET Framework 4.6
Microsoft .NET Framework 4.6/4.6.1/4.6.2
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
Microsoft .NET Framework 4.8
Visual Studio Code
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Foundation 2013 Service Pack 1
Microsoft SharePoint Server 2010 Service Pack 2
Microsoft SharePoint Server 2019

Important Security Updates

Microsoft Excel 2010 Service Pack 2 (32-bit editions)
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
Microsoft Excel 2013 RT Service Pack 1
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
Microsoft Excel 2016 (32-bit edition)
Microsoft Excel 2016 (64-bit edition)
Microsoft Office 2016 for Mac
Microsoft Office 2019 for 32-bit editions
Microsoft Office 2019 for 64-bit editions
Microsoft Office 2019 for Mac
Microsoft 365 Apps for Enterprise for 32-bit Systems
Microsoft 365 Apps for Enterprise for 64-bit Systems
Microsoft Visual Studio 2015 Update 3
Microsoft Visual Studio 2017 version 15.9 (includes 15.1 – 15.8)
Microsoft Visual Studio 2019 version 16.0
Microsoft Visual Studio 2019 version 16.4 (includes 16.0 – 16.3)
Microsoft Visual Studio 2019 version 16.5
Power BI Report Server
Microsoft Forefront Endpoint Protection 2010
Microsoft Security Essentials
Microsoft System Center 2012 Endpoint Protection
Microsoft System Center 2012 R2 Endpoint Protection
Microsoft System Center Endpoint Protection
Windows Defender
Microsoft Dynamics 365 (on-premises) version 8.2
Microsoft Dynamics 365 (on-premises) version 9.0

Moderate Security Updates

Internet Explorer 9

Similar articles:
Microsoft Office Patchday (May 5, 2020)
Microsoft Security Update Summary (May 12, 2020)
Patchday: Windows 10 Updates (May 12, 2020)
Patchday: Updates for Windows 7/8.1/Server (May 12, 2020)


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