Microsoft has published the March 2019 security updates

The March security release consists of security updates for the following software:
Adobe Flash Player
Internet Explorer
Microsoft Edge
Microsoft Windows
Microsoft Office and Microsoft Office SharePoint
ChakraCore
Team Foundation Server
Skype for Business
Visual Studio
NuGet

Please note the following information regarding the security updates:
A list of the latest servicing stack updates for each operating system can be found in ADV990001. This list will be updated whenever a new servicing stack update is released. It is important to install the latest servicing stack update.
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.
Updates for Windows RT 8.1 and Microsoft Office RT software are only available via Windows Update.
For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.
In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.

The following CVEs have FAQs with additional information and may include * further steps to take after installing the updates.
ADV190008
ADV190010 *
ADV990001
CVE-2019-0614
CVE-2019-0702
CVE-2019-0703
CVE-2019-0704
CVE-2019-0755
CVE-2019-0759
CVE-2019-0767
CVE-2019-0774
CVE-2019-0775
CVE-2019-0776
CVE-2019-0782

Known Issues
KB Article / Applies To
4489878 Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Monthly Rollup)
4489881 Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)
4489882 Windows 10 version 1607, Windows Server 2016
4489883 Windows 8.1, Windows Server 2012 R2 (Security-only update)
4489884 Windows Server 2012 (Security-only update)
4489885 Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Security-only update)
4489891 Windows Server 2012 (Monthly Rollup)
4489899 Windows 10 version 1809, Windows Server 2019

  Microsoft March 2019 Security Updates