https://www.bleepingcomputer.com/news/microsoft/windows-10-kb5009543-and-kb5009545-updates-released/

The new update is now available for Windows 10 version 21H2, version 21H1, and version 20H2 As per the official release notes, Microsoft has published two main cumulative updates for Windows 10 - KB5009543 and KB5009545.

This month's cumulative updates include security fixes for November 2021 Update, May 2021 Update, October 2020 Update (version 20H2). This update is not available for May 2020 Update (version 2004) if you use the consumer edition, but the same update will be offered on devices using enterprise or education SKUs.