Today is the monthly 'Windows Update' day

This month as well, there was a Windows Update that delivers monthly security updates and bug fixes. Let's update as soon as possible. This time, a total of 113 software security updates were released, including 13 severity levels of 'urgent' and 96 severity levels of 'important', including countermeasures against multiple zero-day vulnerabilities such as Adobe Font Manager Library.

We have released the security update program for April 2020. See the Security Update Guide for more information. https://t.co/U5eJTOOIIC

— Microsoft Security Team (@JSECTEAM) April 14, 2020

'Security Update Program for April 2020 (Monthly)' explains the security update program released this month. https://t.co/gDngPKujBZ

— Microsoft Security Team (@JSECTEAM) April 15, 2020

April 2020 Security Update (Monthly)-Microsoft Security Response Center
https://msrc-blog.microsoft.com/2020/04/14/202004-security-updates/

Windows 10 v1909, v1903, v1809, v1803, v1709
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Windows 10 v1903 and Windows 10 v1909: 4549951
Windows 10 v1809: 4549949
Windows 10 v1803: 4550922
Windows 10 v1709: 4550927

Windows Server 2019, Windows Server 2016, Server Core installation (2019, 2016, v1909, v1903, v1803)
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Windows Server 2019: 4549949
Windows Server 2016: 4550929
Windows Server v1903 and Windows Server v1909: 4549951
Windows Server v1803: 4550922

◆ Windows 8.1, Windows Server 2012 R2, Windows Server 2012
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Windows 8.1 and Windows Server 2012 R2 Monthly Rollup: 4550961
Windows 8.1 and Windows Server 2012 R2 Security Only: 4550970
Windows Server 2012 Monthly Rollup: 4550917
Windows Server 2012 Security Only: 4550971

◆ Internet Explorer
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Cumulative Update for Internet Explorer: 4550905

◆ Software related to Microsoft Office
Maximum severity:
important

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Knowledge Base articles related to Microsoft Office:
2553306 , 3128012 , 3162033 , 3203462 , 4011097 , 4011104 , 4032216 , 4462153 , 4462210 , 4462225 , 4464527 , 4464544 , 4475609 , 4484117 , 4484125 , 4484126 , 4484126 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484214 , 4484 , 4484258 , 4484260 , 4484266 , 4484269 , 4484273 , 4484274 , 4484281 , 4484283 , 4484284 , 4484285 , 4484287 , 4484290 , 4484294 , 4484295 , 4484296 , 4484300 , 4484319

◆ Microsoft SharePoint related software
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Knowledge Base articles related to Microsoft SharePoint: 4011581 , 4011584 , 4484291 , 4484292 , 4484293 , 4484297 , 4484298 , 4484299 , 4484301 , 4484307 , 4484308 , 4484321 , 4484322

◆ Software related to Microsoft Dynamics
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
Knowledge Base articles related to Microsoft Dynamics and related software: 4538593 , 4549673 , 4549677 , 4549678 , 4549675 , 4549674 , 4549676.

◆ Visual Studio
Maximum severity:
important

The biggest impact:
Elevation of privilege

Related Knowledge Base or Support Web Page:
For more information about Visual Studio security updates, see https://portal.msrc.microsoft.com/en-us/security-guidance .

◆ Chakra Core
Maximum severity:
emergency

The biggest impact:
Remote code execution

Related Knowledge Base or Support Web Page:
ChakraCore is the core part of Chakra, a high performance JavaScript engine that powers Microsoft Edge and Windows applications written in HTML / CSS / JS. For more information, Https://Github.Com/Microsoft/ChakraCore/wiki (English information) and https://github.com/Microsoft/ChakraCore/releases/ please refer to the (English information).

◆ Windows Defender related software
Maximum severity:
important

The biggest impact:
Elevation of privilege

Related Knowledge Base or Support Web Page:
For more information about security updates for Windows Defender related software, see https://portal.msrc.microsoft.com/en-us/security-guidance .

Windows Update is released every second Tuesday of the month in US time, and the next update is scheduled to be provided on Wednesday, May 13, 2020, Japan time.

Security Update Release Schedule (2020)-Microsoft Security Response Center
https://msrc-blog.microsoft.com/2019/10/22/securityupdatereleaseschedule2020/