https://www.bleepingcomputer.com/news/microsoft/windows-10-cumulative-updates-kb4340917-kb4338817-and-kb4338827-released/

Microsoft has released a new patch for systems running the Windows 10 April 2018 Update (version 1803), Windows 10 Fall Creators Update (version 1709), and Windows 10 Creators Update (version 1703).

To install this update you can go to Settings -> Update & Security -> Windows Update and select Check for updates. You can also search for "update" and click on the "Check for updates" option