Microsoft Windows Security Updates September 2020 overview
Welcome to the Microsoft Windows Patch Day overview for September 2020. Microsoft released security updates and non-security updates for all supported client and server operating systems. Other company products have received security updates as well on this Patch Day.
The Windows updates that Microsoft releases on the second Tuesday of a month are cumulative in nature. Administrators may get them via Windows Update, WSUS, as direct downloads, or via other update management systems.
Our monthly overview provides you with details on the released patches. It includes an overview of all security patches that Microsoft released, an Excel spreadsheet with all the patches, an overview of the operating system distribution and severeness, direct download links, links to support pages, security advisories, known issues, and more.
Check out the August 2020 Patch Day in case you missed it.
Microsoft Windows Security Updates September 2020
You may download an Excel spreadsheet with detailed information about the September 2020 Patch Day. Click on the following link to download the archive to your system. All that is left to do is to extract the zip file and open it in a spreadsheet application such as Excel or LibreOffice Calc: windows-security-updates-september-2020
Executive Summary
- Microsoft released security updates for all supported client and server versions of Windows.
- Security updates were also released for other company products including Microsoft Edge (old and new), Internet Explorer, Visual Studio, Microsoft Office, Microsoft OneDrive, SQL Server, and Azure DevOps.
Operating System Distribution
- Windows 7Â Â (extended support only): 33 vulnerabilities: 4 critical and 48 important
- CVE-2020-0922 | Microsoft COM for Windows Remote Code Execution Vulnerability
- CVE-2020-1252 | Windows Remote Code Execution Vulnerability
- CVE-2020-1285 | GDI+ Remote Code Execution Vulnerability
- CVE-2020-1319 | Microsoft Windows Codecs Library Remote Code Execution Vulnerability
- CVE-2020-1508 | Windows Media Audio Decoder Remote Code Execution Vulnerability
- CVE-2020-1593 | Windows Media Audio Decoder Remote Code Execution Vulnerability
- Windows 8.1: 41 vulnerabilities: 5 rated critical and 51 rated important
- same as Windows 7
- Windows 10 version 1803:Â 63 vulnerabilities: 9 critical and 54 important
- CVE-2020-0908 | Windows Text Service Module Remote Code Execution Vulnerability
- CVE-2020-0922 | Microsoft COM for Windows Remote Code Execution Vulnerability
- CVE-2020-0997 | Windows Camera Codec Pack Remote Code Execution Vulnerability
- CVE-2020-1129 | Microsoft Windows Codecs Library Remote Code Execution Vulnerability
- CVE-2020-1252 | Windows Remote Code Execution Vulnerability
- CVE-2020-1285 | GDI+ Remote Code Execution Vulnerability
- CVE-2020-1319 | Microsoft Windows Codecs Library Remote Code Execution Vulnerability
- CVE-2020-1508 | Windows Media Audio Decoder Remote Code Execution Vulnerability
- CVE-2020-1593 | Windows Media Audio Decoder Remote Code Execution Vulnerability
- Windows 10 version 1809: 70 vulnerabilities: 9 critical and 56 important
- same as Windows 10 version 1803
- Windows 10 version 1903: 70 vulnerabilities: 9 critical and 61 important
- same as Windows 10 version 1803
- Windows 10 version 1909:Â
- Â same as Windows 10 version 1803
- Windows 10 version 2004:
Windows Server products
- Windows Server 2008 R2 (extended support only):Â 39 vulnerabilities: 6 critical and 33 important
- CVE-2020-0922 | Microsoft COM for Windows Remote Code Execution Vulnerability
- CVE-2020-1252 | Windows Remote Code Execution Vulnerability
- CVE-2020-1285 | GDI+ Remote Code Execution Vulnerability
- CVE-2020-1319 | Microsoft Windows Codecs Library Remote Code Execution Vulnerability
- CVE-2020-1508 | Windows Media Audio Decoder Remote Code Execution Vulnerability
- CVE-2020-1593 | Windows Media Audio Decoder Remote Code Execution Vulnerability
- Windows Server 2012 R2: 47 vulnerabilities: 6 critical and 41 important.
- same as Windows Server 2008 R2
- Windows Server 2016: 62 vulnerabilities: 9 critical and 56 important.
- same as Windows Server 2008 R2, plus
- CVE-2020-0908 | Windows Text Service Module Remote Code Execution Vulnerability
- CVE-2020-1129 | Microsoft Windows Codecs Library Remote Code Execution Vulnerability
- CVE-2020-0997 | Windows Camera Codec Pack Remote Code Execution Vulnerability
- Windows Server 2019: 73 vulnerabilities: 9 critical and 64 are important
- same as Windows Server 2016.
Other Microsoft Products
- Internet Explorer 11: 3 vulnerability: 1 critical, 2 important
- CVE-2020-0878 | Microsoft Browser Memory Corruption Vulnerability
- Microsoft Edge:Â 4 vulnerabilities: 3 critical, 1 important
- CVE-2020-0878 | Microsoft Browser Memory Corruption Vulnerability
- CVE-2020-1057 | Scripting Engine Memory Corruption Vulnerability
- CVE-2020-1172 | Scripting Engine Memory Corruption Vulnerability
- Microsoft Edge on Chromium:
- see here (latest security patches from the Chromium project)
Windows Security Updates
Windows 7 SP1 and Windows Server 2008 R2
- Monthly Rollup: KB4577051Â
- Security-only Update: KB4577053
Fixes and improvements:
- Yukon, Canada time zone information update (monthly rollup).
- Fixes a security vulnerability issue with user proxies and HTTP-based Intranet servers. HTTP-based Intranet servers cannot leverage user proxies to detect updates by default anymore. Check this support page for additional information (monthly rollup).
- Security Updates
Windows 8.1 and Server 2012 R2
- Monthly Rollup: KB4577066Â
- Security-only Update: KB4577071Â
Fixes and improvements:
- Yukon, Canada time zone information update (monthly rollup).
- Fixes a security vulnerability issue with user proxies and HTTP-based Intranet servers. HTTP-based Intranet servers cannot leverage user proxies to detect updates by default anymore. Check this support page for additional information (monthly rollup).
- Fixed an unnamed issue when evaluating the compatibility status of the Windows system (monthly rollup).
- Security updates.
Windows 10 version 1803
- Support page: KB4577032
Fixes and improvements:
- Ability to sync Microsoft Edge IE Mode unidirectional session cookies when configured by an admin.
- Fixed an issue related to unexpected notifications.
- Updated Yukon, Canada time zone information.
- Fixed an Ever Viewer issue that prevented it from saving filtered events correctly.
- Fixed a delayed shutdown issue caused by Microsoft Keyboard Filter Service.
- Fixes a security vulnerability issue with user proxies and HTTP-based Intranet servers. HTTP-based Intranet servers cannot leverage user proxies to detect updates by default anymore. Check this support page for additional information (monthly rollup).
- Security Updates
Windows 10 version 1809
- Support page: KB4570333
Fixes and improvements:
- Fixes a security vulnerability issue with user proxies and HTTP-based Intranet servers. HTTP-based Intranet servers cannot leverage user proxies to detect updates by default anymore. Check this support page for additional information (monthly rollup).
- Security Updates
Windows 10 version 1903 and 1909
- Support page: KB4574727
Fixes and improvements:
- Fixes a security vulnerability issue with user proxies and HTTP-based Intranet servers. HTTP-based Intranet servers cannot leverage user proxies to detect updates by default anymore. Check this support page for additional information (monthly rollup).
- Security Updates
Windows 10 version 2004
- Support page: KB4571756Â
Fixes and improvements:
- Addressed a potential elevation of privilege issue in windowmanagement.dll.
- Fixes a security vulnerability issue with user proxies and HTTP-based Intranet servers. HTTP-based Intranet servers cannot leverage user proxies to detect updates by default anymore. Check this support page for additional information (monthly rollup).
- Security Updates
Other security updates
KB4577010 -- Cumulative security update for Internet Explorer: September 8, 2020
KB4577038 -- 2020-09 Security Monthly Quality Rollup for Windows Embedded 8 Standard and Windows Server 2012
KB4577048 -- 2020-09 Security Only Quality Update for Windows Embedded 8 Standard and Windows Server 2012
KB4577064 -- 2020-09 Security Monthly Quality Rollup for Windows Server 2008
KB4577070 -- 2020-09 Security Only Quality Update for Windows Server 2008
KB4577015 -- 2020-09 Cumulative Update for Windows Server 2016 and Windows 10 Version 1607
KB4577021 -- 2020-09 Cumulative Update for Windows 10 Version 1703
KB4577041 -- 2020-09 Cumulative Update for Windows 10 Version 1709
KB4577049 -- 2020-09 Cumulative Update for Windows 10 Version 1507
Microsoft .NET Framework updates:
KB4576485 -- 2020-09 Security and Quality Rollup for .NET Framework 4.8 for Windows Embedded 8 Standard and Windows Server 2012
KB4576486 -- 2020-09 Security and Quality Rollup for .NET Framework 4.8 for Windows 8.1 and Windows Server 2012 R2
KB4576487 -- 2020-09 Security and Quality Rollup for .NET Framework 4.8 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
KB4576488 -- 2020-09 Security Only Update for .NET Framework 4.8 for Windows Embedded 8 Standard and Windows Server 2012
KB4576489 -- 2020-09 Security Only Update for .NET Framework 4.8 for Windows 8.1 and Windows Server 2012 R2
KB4576490 -- 2020-09 Security Only Update for .NET Framework 4.8 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
KB4576612 -- 2020-09 Security and Quality Rollup for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Embedded Standard 7, Windows 7, Windows Server 2008 R2, and Windows Server 2008
KB4576613 -- 2020-09 Security and Quality Rollup for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Embedded 8 Standard and Windows Server 2012
KB4576614 -- 2020-09 Security and Quality Rollup for .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows 8.1 and Windows Server 2012 R2
KB4576628 -- 2020-09 Security and Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Embedded Standard 7, Windows 7, and Windows Server 2008 R2
KB4576629 -- 2020-09 Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Embedded 8 Standard and Windows Server 2012
KB4576630 -- 2020-09 Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1 and Windows Server 2012 R2
KB4576631 -- 2020-09 Security and Quality Rollup for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008
KB4576478 -- 2020-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server, version 2004 and Windows 10 Version 2004
KB4576479 --2020-09 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 and Windows 10 Version 1607
KB4576480 -- 2020-09 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1703
KB4576481 -- 2020-09 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1709
KB4576482 -- 2020-09 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1803 and Windows Server 2016 (1803)
KB4576483 -- 2020-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2019 and Windows 10 Version 1809
KB4576484 -- 2020-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server, version 1909, Windows 10 Version 1909, Windows Server 2019 (1903), and Windows 10 Version 1903
KB4576627 -- 2020-09 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows Server 2019 and Windows 10 Version 1809
Servicing Stack updates:
KB4577266 -- 2020-09 Servicing Stack Update for Windows Server, version 2004 and Windows 10 Version 2004
KB4570332 -- 2020-09 Servicing Stack Update for Windows Server 2019 and Windows 10 Version 1809
KB4576750 -- 2020-09 Servicing Stack Update for Windows Server 2016 and Windows 10 Version 1607
KB4576751 -- 2020-09 Servicing Stack Update for Windows Server 2019 (1903), and Windows 10 Version 1903
Known Issues
Windows 7 SP1 and Windows Server 2008 R2
- Updates may fail to install if the system is not supported by ESU.
- Certain operations may fail on cluster shared volumes. See workarounds on the support page.
Windows 8.1 and Server 2012 R2
- Certain operations may fail on cluster shared volumes. See workarounds on the support page.
Windows 10 version 1809
- Error "0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND."Â on systems with certain Asian language packs. Microsoft suggests to uninstall and reinstall the language packs, or to reset the PC.
- Microsoft Edge legacy error "0x80704006. Hmmmm…can’t reach this page" when trying to access sites on non-standard ports. Suggestions include using the new Edge or IE 11.
Windows 10 version 2004
- Users of the Microsoft Input Method Editor for Chinese and Japanese may experience various issues. Check this support page for additional details.
Security advisories and updates
Non-security related updates
KB4566371 -- 2020-09 Update for Windows 8.1, Windows Server 2012 R2, Windows Embedded 8 Standard, Windows Server 2012, Windows 7, Windows Server 2008 R2, and Windows Server 2008
KB4574726 -- 2020-09 Dynamic Update for Dynamic Update for Windows 10 Version 1903, and Windows 10 Version 1909
KB4578847 -- 2020-09 Update for Windows Server 2008 R2 for x64-based Systems
KB890830 -- Windows Malicious Software Removal Tool
KB4574728 -- 2020-09 Dynamic Update for Windows 10 Version 2004
Microsoft Office Updates
You find Office update information here.
How to download and install the September 2020 security updates
Security updates are released via Microsoft's Windows Update service and update management services such as WSUS. The main cumulative updates may also be downloaded from the company's Microsoft Update Catalog website.
It is recommended to back up the system before updates are installed as the installation of updates may cause numerous issues including boot issues, data loss or loss of functionality.
Windows administrators may run a manual update check at any time on home devices. Here are the instructions on how to do that:
- Select Start and select Settings.
- Select Update & Security in the Settings application.
- Click on the "check for updates" button to run a manual check for updates. Windows checks if important updates are available to download and install these on the device.
Direct update downloads
Below are resource pages with direct download links, if you prefer to download the updates to install them manually.
Windows 7 and Server 2008 R2
- KB4577051 -- 2020-09 Security Monthly Quality Rollup for Windows 7
- KB4577053 -- 2020-09 Security Only Quality Update for Windows 7
Windows 8.1 and Windows Server 2012 R2
- KB4577066 -- 2020-09 Security Monthly Quality Rollup for Windows 8.1
- KB4577071 -- 2020-09 Security Only Quality Update for Windows 8.1
Windows 10 (version 1803)
- KB4577032 -- 2020-09 Cumulative Update for Windows 10 Version 1803
Windows 10 (version 1809)
- KB4570333 -- 2020-09 Cumulative Update for Windows 10 Version 1809
Windows 10 (version 1903)
- KB4574727 -- 2020-09 Cumulative Update for Windows 10 Version 1903
Windows 10 (version 1909)
- KB4574727Â -- 2020-09 Cumulative Update for Windows 10 Version 1909
Windows 10 (version 2004)
- KB4571756 -- 2020-09 Cumulative Update for Windows 10 Version 2004
Additional resources
- September 2020 Security Updates release notes
- List of software updates for Microsoft products
- List of the latest Windows Updates and Services Packs
- Security Updates Guide
- Microsoft Update Catalog site
- Our in-depth Windows update guide
- How to install optional updates on Windows 10
- Windows 10 Update History
- Windows 8.1 Update History
- Windows 7 Update History
Once again, thank you very much Martin for this nice overview.
You are welcome!
Last “Direct Download: Windows 10 (version 2004)” should point to
https://www.catalog.update.microsoft.com/Search.aspx?q=KB4571756
Thank you, fixed!
Wonder what all these updates will break this month?? Heck I have a couple PC’s still stuck on 1909 still can’t get the May upgrade. I guess now hope the Fall update will install. I’m pretty much done with Windows 10, Microsoft just can’t get its stuff together.
Thanks, Martin for helping me with this mount update/patch/upgrading my Windows 10 proffesional o.s. to the version 2004 build 19041.508.
After the update yesterday from KB4558130 for Windows 10 version 2004 I noticed today that the update KB4558130 still is installed, after the monthly update from today. So that’s good news!
For Win 7 after installing updat is displayed the error “Failure to configure Windows updates. Reverting Changes. Do not turn off your computer”.
@Antmavr
Windows 7 has gone out of support on January 10th, 2020. If we are talking about the ESU updates here, which you shouldn’t be getting because you haven’t paid for them, then you should be aware that the hacks enabling those updates are in no way guaranteed to emulate an officially licensed machine (one that rightfully gets those updates) correctly, neither are those hacks guaranteed to be permanent (needless to say, Microsoft is actively fighting them).
I just run Windows 8.1 with Classic Shell and call it a day, no need for the whole ESU trouble.
You have to install both KB4577051 and KB4577051 with version 8 of the bypass, or manually install it with the standalone installer without bypass. Either way works, which ever you choose.
Also, before you install KB4577051 make sure you have KB4577051 and KB4577051 installed. I also installed KB4577051 just to be on the safe side.
KB4577051 and KB4577010*
When I am trying to install Win 7 Updates the following failure message is displayed “Failure Configuring Windows Updates Reverting Changes”!!! Any solution?
Windows 10, Linux, Chromebook, Mac.
Or just keep using Windows 7 with esu bypass.
Yay, updated LTSC; only one machine, no time for others. All went well.
Hi, just updated (+ v8 bypass) my Windows 7
One question tho: I got a BSOD
TL;DR
-Been updating since yesterday, belatedly read I need v8, and finally finished in the early hours
-Did the usual restart/reboot, and when I slept I left it in usual hibernate mode
-After I finished with my late brunch I opened my laptop and (though I never saw it load due to fixing the table) I suddenly found myself staring at a BSOD
Via BlueScreenView-x64, here’s what I found (pardon any non-essentials I may not have included):
-Bug Check String: PAGE_FAULT_IN_NONPAGED_AREA
-Bug Check Code: 0x00000050
-Parameter 1: fffffa80`081d6024
-Parameters 2 & 4: 00000000`00000000
-Parameter 3: fffff880`04e8a191
-Caused By Driver: ntoskrnl.exe
-Caused By Address: ntoskrnl.exe+94bc0
-File Version: 6.1.7601.24560 (win7sp1_ldr_escrow.200826-1753)
Can anyone help?
I can help, since I have Google Search in my internet: https://www.auslogics.com/en/articles/fix-ntoskrnl-exe-bsod/
If you need more help just ask and I will fire up my internet, which has Google Search, again.
Legend!
Thank you Martin for always putting together all this info, it’s my go to source on patch Tuesday’s.
No issues to report for my Win8.1 Pro system after installing the monthly rollup (KB4577066) and .Net (KB4576630) patches. All telemetry tasks/services are still disabled.
Sticking with the strategy of updating from the catalog a month behind, just did August’s with no issues.
I follow the drama here:
https://www.askwoody.com/
Security updates, if that’s truly what they are and not a version upgrade or chredge install in disguise, make sense. Updates that fix issues caused by previous updates are BS.
Just noticed another time zone issue fix, how do these even occur?
Windows 10 is getting more scary every release. Many new features are controlled server side and web view. They can make changes to any parts of Windows without user end permissions.
I will stick with LTSC 2015 and move on to another OS once extended support is done in 2029. Microsoft can shove their windows as a service where the sun don’t shine.
@Anonymous
“Microsoft can shove their windows as a service where the sun don’t shine.”
My exact sentiment as well and why I moved back to Windows 8.1. An operating system should NOT be a “service” that is constantly changing. Such a system does not serve the customer but instead its master Microsoft which is unacceptable! They have truly lost their way thus once support ends for 8.1 in 2023 I’m done with them.
Has anybody experience any issues recently related to DNS or name resolution on their Windows Server 2019 or 2016 OS’s ? We applied some various patches, security related patches and Window’s updates and now we are having issues with DNS or resolving named devices to their IP addresses. Any help or suggestions would be appreciated.
Hi John, We are having the same issue. Any help or suggestions would be appreciated.
Here are the patches we applied recently…KB4577015 and KB4576750