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Microsoft May 2021 Security Updates


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The Microsoft May 2021 security updates have been released and consist of 55 CVEs.  Of these 55 CVEs, 4 are rated Critical, 50 Important, and 1 is rated Moderate in severity.
According to Microsoft, although three of the bugs are listed as being publicly known, none are listed as currently being exploited.

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 Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

See Dustin Childs review and analysis in Zero Day Initiative -- The May 2021 Security Update Review.

May Security Updates Guide

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