Today is the monthly “Windows Update” day.

Windows Update was held again this month, where security updates and bug fixes for Windows, which are updated monthly, are distributed. Please update it as soon as possible.

October 2023 Security Updates (Monthly) | MSRC Blog | Microsoft Security Response Center
https://msrc.microsoft.com/blog/2023/10/202310-security-update/

Microsoft monthly security updates for October 2023 have been released. By default it updates automatically. For organizations managing updates, we have published an overview on our blog. Please refer to it and update it as soon as possible. https://t.co/rE0F3ZJvNw #Security #Updates #Microsoft pic.twitter.com/MVNtSHuL3l

— Microsoft Security Team (@JSECTEAM) October 11, 2023

◆Windows 11 v22H2, v21H2
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
v22H2 5031354
v21H2 5031358

◆Windows 10 v22H2, v21H2
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
5031356

◆Windows Server 2022 (including Server Core installation)
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
5031364

◆Windows Server 2019, 2016 (including Server Core installation)
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
Windows Server 2019 5031361
Windows Server 2016 5031362

◆Windows Server 2012 R2, Windows Server 2012 (including Server Core installation)
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
Windows Server 2012 R2
Monthly Rollup 5031419
Security Only 5031407
Windows Server 2012
Monthly Rollup 5031442
Security Only 5031427

◆Microsoft Office
Maximum severity:
important

Biggest impact:
Elevation of privilege

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/officeupdates

◆Microsoft Exchange Server
Maximum severity:
important

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/exchange
Released: October 2023 Exchange Server Security Updates

◆Microsoft .NET
Maximum severity:
important

Biggest impact:
denial of service

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/dotnet

◆Microsoft Visual Studio
Maximum severity:
important

Biggest impact:
denial of service

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/visualstudio

◆Microsoft Azure DevOps Server
Maximum severity:
important

Biggest impact:
Elevation of privilege

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/azure/devops/server

◆Microsoft Dynamics 365
Maximum severity:
important

Biggest impact:
information leak

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/dynamics365

◆Microsoft SQL Server
Maximum severity:
important

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/sql

◆Skype for Business Server
Maximum severity:
important

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/skypeforbusiness

◆Azure-related software
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/azure

Windows Update will be released on the second Tuesday of every month, American time, and the next update is scheduled to be released on Wednesday, November 15, 2023, Japan time.