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Microsoft has published the September 2020 security updates for Windows, Edge, ChakraCore, IE, SQL Server, JET Database Engine, Office, Dynamics, Visual Studio, Exchange Server, SQL Server, ASP.NET, OneDrive, and Azure DevOps.





September 2020 Security Updates

The September 2020 security release consists of security updates for the following software:

  • Microsoft Windows
  • Microsoft Edge (EdgeHTML-based)
  • Microsoft Edge (Chromium-based)
  • Microsoft ChakraCore
  • Internet Explorer
  • SQL Server
  • Microsoft JET Database Engine
  • Microsoft Office and Microsoft Office Services and Web Apps
  • Microsoft Dynamics
  • Visual Studio
  • Microsoft Exchange Server
  • SQL Server
  • ASP.NET
  • Microsoft OneDrive
  • Azure DevOps

Please note the following information regarding the security updates:

  • For information regarding enabling Windows 10, version 1909 features, please see Windows 10, version 1909 delivery options. Note that Windows 10, versions 1903 and 1909 share a common core operating system with an identical set of system files. They will also share the same security update KBs.
  • Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the  Microsoft Update Catalog.
  • For information on lifecycle and support dates for Windows 10 operating systems, please see  Windows Lifecycle Facts Sheet.
  • A list of the latest servicing stack updates for each operating system can be found in  ADV990001. This list will be updated whenever a new servicing stack update is released. It is important to install the latest servicing stack update.
  • Updates for Windows RT 8.1 and Microsoft Office RT software are only available via  Windows Update.
  • In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.
  • Customers running Windows 7, Windows Server 2008 R2, or Windows Server 2008 need to purchase the Extended Security Update to continue receiving security updates. See  4522133 for more information.
  • There is a change coming with regards to Servicing Stack Updates. Please see  Simplifying SSUs for more information.

The following CVEs have FAQs with additional information and may include * further steps to take after installing the updates. Please note that this is not a complete list of CVEs for this release.

Known Issues

The following KBs contain information about known issues with the security updates. For a complete list of security update KBs, please see  20200908. For more information about Windows Known Issues, please see  Windows message center (links to currently-supported versions of Windows are in the left pane).



KB Article Applies To
4484488 SharePoint Foundation 2013
4484515 SharePoint Enterprise Server 2013
4486667 SharePoint Foundation 2010
4570333 Windows 10 Version 1809, Windows Server 2019
4571756 Windows 10, version 2004
4577015 Windows 10, version 1607, Windows Server 2016
4577038 Windows Server 2012 (Monthly Rollup)
4577048 Windows Server 2012 (Security-only update)
4577051 Windows 7, Windows Server 2008 R2 (Monthly Rollup)
4577053 Windows 7, Windows Server 2008 R2 (Security-only update)
4577064 Windows Server 2008 Service Pack 2 (Monthly Rollup)
4577066 Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)
4577070 Windows Server 2008 Service Pack 2 (Security-only update)
4577071 Windows 8.1, Windows Server 2012 R2 (Security-only update)
4577352 Exchange Server 2019, Exchange Server 2016
Win10

September 2020 Security Updates