Microsoft Patch Tuesday March, 2021

Updates this Month

This release consists of security updates for the following products, features and roles.

• Application Virtualization
• Azure
• Azure DevOps
• Azure Sphere
• Internet Explorer
• Microsoft ActiveX
• Microsoft Exchange Server
• Microsoft Edge (Chromium-based)
• Microsoft Graphics Component
• Microsoft Office
• Microsoft Office Excel
• Microsoft Office PowerPoint
• Microsoft Office SharePoint
• Microsoft Office Visio
• Microsoft Windows Codecs Library
• Power BI
• Role: DNS Server
• Role: Hyper-V
• Visual Studio
• Visual Studio Code
• Windows Admin Center
• Windows Container Execution Agent
• Windows DirectX
• Windows Error Reporting
• Windows Event Tracing
• Windows Extensible Firmware Interface
• Windows Folder Redirection
• Windows Installer
• Windows Media
• Windows Overlay Filter
• Windows Print Spooler Components
• Windows Projected File System Filter Driver
• Windows Registry
• Windows Remote Access API
• Windows Storage Spaces Controller
• Windows Update Assistant
• Windows Update Stack
• Windows UPnP Device Host
• Windows User Profile Service
• Windows WalletService
• Windows Win32K

Security Update Guide Blog Posts

Relevant Information

• 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.
• Microsoft is improving Windows Release Notes. For more information, please see What's next for Windows release notes.
• 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.
• 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.

Please see the following for more information on the Microsoft Exchange Server Vulnerabilities:

• MSRC Blog
• Hafnium Targeting Exchange
• Microsoft on the Issues
• Exchange Team Blog
• March 8 Exchange Team Blog
• Microsoft Exchange Server Vulnerabilities Mitigations

FAQs, Mitigations, and Workarounds

The following CVEs have FAQs, Mitigations, or Workarounds. You can see these in more detail from the Vulnerabilities tab by selecting FAQs, Mitigations and Workarounds columns in the Edit Columns panel.

• CVE-2021-1640
• CVE-2021-24089
• CVE-2021-24104
• CVE-2021-24107
• CVE-2021-24108
• CVE-2021-24110
• CVE-2021-26411
• CVE-2021-26855
• CVE-2021-26857
• CVE-2021-26858
• CVE-2021-26859
• CVE-2021-26867
• CVE-2021-26869
• CVE-2021-26877
• CVE-2021-26884
• CVE-2021-26887
• CVE-2021-26893
• CVE-2021-26894
• CVE-2021-26895
• CVE-2021-26896
• CVE-2021-26897
• CVE-2021-26902
• CVE-2021-27047
• CVE-2021-27048
• CVE-2021-27049
• CVE-2021-27050
• CVE-2021-27051
• CVE-2021-27052
• CVE-2021-27054
• CVE-2021-27055
• CVE-2021-27056
• CVE-2021-27057
• CVE-2021-27058
• CVE-2021-27059
• CVE-2021-27061
• CVE-2021-27062
• CVE-2021-27063
• CVE-2021-27065
• CVE-2021-27067
• CVE-2021-27074
• CVE-2021-27075
• CVE-2021-27076
• CVE-2021-27080
• CVE-2021-27082

Known Issues

You can see these in more detail from the Deployments tab by selecting Known Issues column in the Edit Columns panel.

For more information about Windows Known Issues, please see Windows message center (links to currently-supported versions of Windows are in the left pane).