Microsoft has released the May 2018 security updates

The May security release consists of security updates for the following software:
Internet Explorer
Microsoft Edge
Microsoft Windows
Microsoft Office and Microsoft Office Services and Web Apps
ChakraCore
Adobe Flash Player
.NET Framework
Microsoft Exchange Server
Windows Host Compute Service Shim

Please note the following information regarding the security updates:
Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the Microsoft Update Catalog.
Starting in March 2017, a delta package will be available on the Microsoft Update Catalog for Windows 10 version 1607 and newer. This delta package contains just the delta changes between the previous month and the current release.
Updates for Windows RT 8.1 and Microsoft Office RT software are only available via Windows Update.
In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.
For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.

  Microsoft May 2018 Security Update