KB5071205: Windows Server containers for October 2025 (Out-of-band)
Applies To
Original publish date: October 24, 2025
KB ID: 5071205
Windows Server containers
This out-of-band (OOB) update addresses the following known issue:Â
-
[Windows Server Update Services (WSUS)] Fixed: This update addresses a remote code execution (RCE) vulnerability that was identified in WSUS reporting web services. For more information about the security fix, see CVE-2025-59287.
As part of this OOB release, we have updated the Windows Server Base OS container images. With these updates, you can either automate the build process for updated container images or manually pull the latest versions. Unlike Windows Server or Windows client, Windows Server containers do not include a servicing stack and do not support in-place updates. Instead, we rebuild and publish updated Windows Server Base OS container images each month to incorporate the latest fixes.
For more information on update best practices, see Update Windows Server containers.
Known issues in this update
Windows Server Update Services (WSUS) does not display error details
After installing this update or later updates, Windows Server Update Services (WSUS) does not display synchronization error details within its error reporting. This functionality is temporarily removed to address the Remote Code Execution Vulnerability. For more information about the vulnerability, see CVE-2025-59287.
Available Windows Server container image
|
Container |
Version |
KB |
Architecture |
Languages |
|
Windows Server 2025 Server Core Container |
10.0.26100.6905 |
Cumulative LCU: KB5070881 SSU version 10.0.26100.6893 (included in LCU) |
x64 |
en-us |
|
Windows Server 2025 Nano Server Container |
10.0.26100.6905 |
Cumulative LCU: KB5070881 SSU version 10.0.26100.6893 (included in LCU) |
x64 |
en-us |
|
Windows Server 2025 Container |
10.0.26100.6905 |
Cumulative LCU: KB5070881 SSU version 10.0.26100.6893 (included in LCU) |
x64 |
en-us |
Support for Windows Server 2025 will end in October 2034
After October 10, 2034, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows Server 2025. We recommend that you upgrade to a later version of Windows Server.
|
Container |
Version |
KB |
Architecture |
Languages |
|
Windows Server 2022 Server Core Container |
10.0.20348.4297 |
Cumulative LCU: KB5070884 SSU version 10.0.20348.4285 (included in LCU) |
x64 |
en-us |
|
Windows Server 2022 Nano Server Container |
10.0.20348.4297 |
Cumulative LCU: KB5070884 SSU version 10.0.20348.4285 (included in LCU) |
x64 |
en-us |
|
Windows Server 2022 Container |
10.0.20348.4297 |
Cumulative LCU: KB5070884 SSU version 10.0.20348.4285 (included in LCU) |
x64 |
en-us |
Support for Windows Server 2022 will end in October 2031
After October 14, 2031, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows Server 2022. We recommend that you upgrade to a later version of Windows Server.
NOTE For all Windows Server 2019 images (Windows Server, Nano Server, and Windows Server Core), we now default to tag LTSC2019. However, you can continue to use the 1809 tag (as before) to pull the latest Nano Server and Windows image.
|
Container |
Version |
KB |
Architecture |
Languages |
|
Windows Server 2019 Server Core Container |
10.0.17763.7922 |
Cumulative LCU: KB5070883 SSU version 10.0.17763.7912 (included in LCU) |
x64 |
en-us |
|
Windows Server 2019 Nano Server Container |
10.0.17763.7922 |
Cumulative LCU: KB5070883 SSU version 10.0.17763.7912 (included in LCU) |
x64 |
en-us |
|
Windows Server 2019 Windows Container |
10.0.17763.7922 |
Cumulative LCU: KB5070883 SSU version 10.0.17763.7912 (included in LCU) |
x64 |
en-us |
Support for Windows Server 2019 will end in January 2029
After January 9, 2029, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows Server 2019. We recommend that you upgrade to a later version of Windows Server.
|
Container |
Version |
KB |
Architecture |
Languages |
|
Windows Server 2016 Server Core Container |
10.0.14393.8524 |
Cumulative LCU: KB5070882 SSU: KB5066584 .NET 4.7.2: KB4054590 |
x64 |
cs-cz, de-de, en-us, es-es, fr-fr, hu-hu, it-it, ja-jp, ko-kr, nl-nl, pl-pl, pt-br, pt-pt, ru-ru, sv-se, tr-tr, zh-cn, zh-tw |
Support for Windows Server 2016 will end in January 2027
After January 12, 2027, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows Server 2016. We recommend that you upgrade to a later version of Windows Server.
References
Update Windows Server containers
For information on .NET Framework support, see dotnet/framework.
Need more help?
Want more options?
Explore subscription benefits, browse training courses, learn how to secure your device, and more.
Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.
