The Microsoft June 2021 security updates have been released and consist of 50 CVEs. Of these 50 CVEs, 5 are rated Critical and 45 are rated Important in severity.
According to Microsoft, six of these bugs are currently under active attach and three are publicly known at the time of release.
The updates apply to the following products: Microsoft Windows, .NET Core and Visual Studio, Microsoft Office, Microsoft Edge (Chromium-based and EdgeHTML), SharePoint Server, Hyper-V, Visual Studio Code - Kubernetes Tools, Windows HTML Platform, and Windows Remote Desktop.
See the KBs listed at June 2021 Security Updates - Release Notes - Security Update Guide - Microsoft for information regarding known issues with the security updates.
Prerequisite:
You must install the May 11, 2021 update (KB5003173) before installing the latest cumulative update (LCU).
Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest LCU. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
Recommended Reading: See Dustin Childs review and analysis in Zero Day Initiative -- The June 2021 Security Update Review.
Additional Update Notes:
- MSRT -- The Malicious Software Removal Tool is now run on a quarterly basis rather than monthly. See Remove specific prevalent malware with Windows Malicious Software Removal Tool.
- Servicing Stack Updates -- Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see ADV990001.
- 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 also available via the Microsoft Update Catalog.
- For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.
- Windows Update History:
References
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