Microsoft is rolling out a new cumulative update for all supported version of Windows 10. The update comes with security fixes and minor bug fixes for Windows 10 November 2019 Update, May 2019 Update and October 2018 Update. The November 2019 cumulative update includes security fixes for browsers, Windows kernal and other core components. You can open the Settings app and click on the Windows Update option to grab the patches. If you own multiple PCs or if you would like to patch the PCs manually, you can learn more about it.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-kb4530684-and-kb4530715-cumulative-updates-released/