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.

September 2023 Security Updates (Monthly) | MSRC Blog | Microsoft Security Response Center
https://msrc.microsoft.com/blog/2023/09/202309-security-update/

Microsoft monthly security updates for September 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/dUTQNjydAD #Security #Updates #Microsoft pic.twitter.com/6f3bhKz6MU

— Microsoft Security Team (@JSECTEAM) September 13, 2023

◆Windows 11 v22H2, v21H2
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
v22H2 5030219
v21H2 5030217

◆Windows 10 v22H2, v21H2
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
5030211

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

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
5030216
Security Hotpatch Update 5030325

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

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
Windows Server 2019 5030214
Windows Server 2016 5030213

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

Biggest impact:
Elevation of privilege

Related Knowledge Base or Support Web Pages:
Windows Server 2012 R2
Monthly Rollup 5030269
Security Only 5030287
Windows Server 2012
Monthly Rollup 5030278
Security Only 5030279

◆Microsoft Office
Maximum severity:
important

Biggest impact:
Enables remote code execution

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

◆Microsoft SharePoint
Maximum severity:
important

Biggest impact:
Enables remote code execution

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

◆Microsoft Exchange Server
Maximum severity:
important

Biggest impact:
Enables remote code execution

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/exchange
September 2023 release of new Exchange Server CVEs (resolved by August 2023 Security Updates)

◆Microsoft .NET
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

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

◆Microsoft Visual Studio
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

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

◆Microsoft Dynamics 365
Maximum severity:
important

Biggest impact:
Impersonation

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

◆Azure-related software
Maximum severity:
emergency

Biggest impact:
Enables remote code execution

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

◆Microsoft Malware Protection Engine
Maximum severity:
important

Biggest impact:
Bypassing security features

Related Knowledge Base or Support Web Pages:
https://learn.microsoft.com/system-center

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, October 11, 2023, Japan time.