Today is the monthly 'Windows Update' day

This month too, there was a Windows Update that delivers monthly Windows security updates and bug fixes. Let's update as soon as possible.

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

— Microsoft Security Team (@JSECTEAM) October 13, 2020

'Security Updates for October 2020 (Monthly)' describes the security updates released this month. https://t.co/nUYoeHAzCh

— Microsoft Security Team (@JSECTEAM) October 13, 2020

◆ Windows 10 v2004, v1909, v1903, v1809, v1803, v1709
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Windows 10 v2004: 4579311
Windows 10 v1903 and Windows 10 v1909: 4577671
Windows 10 v1809: 4577668
Windows 10 v1803: 4580330
Windows 10 v1709: 4580328

◆ Windows Server 2019, Windows Server 2016, Server Core installation (2019, 2016, v2004, v1909, v1903)
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Windows Server 2019: 4577668
Windows Server 2016: 4580346
Windows Server v2004: 4579311
Windows Server v1903 and Windows Server v1909: 4577671

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

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Windows 8.1 and Windows Server 2012 R2 Monthly Rollup: 4580347
Windows 8.1 and Windows Server 2012 R2 Security Only: 4580358
Windows Server 2012 Monthly Rollup: 4580382
Windows Server 2012 Security Only: 4580353

◆ Microsoft Office related software
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Knowledge related to the Microsoft Office-related software: 4462175 , 4484417 , 4484435 , 4484524 , 4486663 , 4486671 , 4486674 , 4486678 , 4486679 , 4486682 , 4486688 , 4486689 , 4486692 , 4486695 , 4486700 , 4486701 , 4486703 , 4486707

◆ Microsoft SharePoint related software
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Knowledge Base Articles Related to Microsoft SharePoint Related Software: 4484531 , 4486676 , 4486677 , 4486687 , 4486694 , 4486708

◆ Microsoft Exchange Server
Maximum severity:
important

Most impact:
information leak

Related Knowledge Base or Support Web Page:
Microsoft Exchange Server Knowledge Base article : 4581424

◆ Microsoft Dynamics 365 related software
Maximum severity:
important

Most impact:
Elevation of privilege

Related Knowledge Base or Support Web Page:
Knowledge Base Articles Related to Microsoft Dynamics Related Software: 4578105 , 4578106

◆ Microsoft Visual Studio related software
Maximum severity:
important

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
For more information about security updates for Visual Studio related software, see the Security Update Guide. https://portal.msrc.microsoft.com/ja-jp

◆ Microsoft .NET related software
Maximum severity:
important

Most impact:
information leak

Related Knowledge Base or Support Web Page:
Microsoft .NET Framework Knowledge Base : 4578968 , 4578969 , 4578971 , 4578972 , 4578974 , 4579976 , 4579978 , 4579979 , 4580328 , 4580330 , 4580346 , 4580468 , 4580469

◆ Adobe Flash Player
Maximum severity:
emergency

Most impact:
Code is executed remotely

Related Knowledge Base or Support Web Page:
Knowledge Base article related to Adobe Flash Player: 4580325

Windows Update is released on the second Tuesday of every month in US time, and the next update will be available on Wednesday, November 11, 2020 in Japan time.

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