https://www.bleepingcomputer.com/news/microsoft/windows-10-cumulative-updates-kb4601315-and-kb4601319-released/

As part of the February Patch cycle, Microsoft is rolling out a new cumulative update for all supported version of Windows.

The cumulative update with security fixes is rolling out to PCs with October 2020 Update, May 2020 Update, November 2019 Update, and May 2019 Update. In this month's update, there are only security enhancements for the system, browsers, core components and other basic functions.