The Microsoft March 2023 security updates have been released and consist of 74 new CVEs. Of these CVEs, 6 are rated critical and 67 are rated important and one rated moderate in severity. At the time of release, one is listed as publicly known and two as being in the wild.
See the very long list of KBs at the bottom of the page at March 2023 Security Updates - Release Notes - Security Update Guide - Microsoft for information regarding known issues with the security updates as well as the CVEs with FAQs, Mitigations and/or Workarounds.
Important:
After March 2023, there are no more optional, non-security preview releases for the supported editions of Windows 10, version 20H2 and Windows 10, version 21H2. Only cumulative monthly security updates (known as the "B" or Update Tuesday release) will continue for these versions. Windows 10, version 22H2 will continue to receive security and optional releases.
Recommended Reading: See Dustin Childs review and analysis in Zero Day Initiative -- The March 2023 Security Update Review.
See the very long list of KBs at the bottom of the page at March 2023 Security Updates - Release Notes - Security Update Guide - Microsoft for information regarding known issues with the security updates as well as the CVEs with FAQs, Mitigations and/or Workarounds.
Important:
After March 2023, there are no more optional, non-security preview releases for the supported editions of Windows 10, version 20H2 and Windows 10, version 21H2. Only cumulative monthly security updates (known as the "B" or Update Tuesday release) will continue for these versions. Windows 10, version 22H2 will continue to receive security and optional releases.
Recommended Reading: See Dustin Childs review and analysis in Zero Day Initiative -- The March 2023 Security Update Review.