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Recorded 29 Oct 2026 at 15:26 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

.NET Framework updateMicrosoft Learn and Support

KB5126422

September 8, 2026-KB5126422 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022

What it said

KB
KB5126422
Applies to
Windows Server 2022
Related KBs
KB5126149
CVEs named by Microsoft
Readiness
This is a .NET Framework servicing update, not a Windows OS build. Review Microsoft's support article and test the applicable framework versions; OS release-health coverage does not establish this update's deployment readiness.
Windows versions and builds
Not in the collected release tables
Restart required
Not stated in collected security fixes
CVEs fixed
CVE-2026-69522
Known issues caused
None in the collected release health data
Known issues resolved
None in the collected release health data
Included security update
None identified in the collected release tables
CVEs listed directly for this KB
CVE-2026-69522
Missing security release
None identified in collected security coverage

Source evidence when recorded

dotnet-framework-updates
IncompleteRead 29 Oct 2026 at 09:00 UTC
Microsoft security releases
Complete at observationRead 29 Oct 2026 at 15:24 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

  1. Security fixes updated · Applies to: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 → Windows Server 2022
Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version
Field-level log (26)

Up to 100 recent field edits are shown; older edits may be outside retention.

  1. 29 Oct 2026 · 15:26:56 UTC Source coverage: dotnet-framework-updatesCurrent → Incomplete
  2. 29 Oct 2026 · 11:09:34 UTC Source coverage: dotnet-framework-updatesIncomplete → Current
  3. 27 Oct 2026 · 12:20:40 UTC Source coverage: dotnet-framework-updatesCurrent → Incomplete
  4. 27 Oct 2026 · 05:37:25 UTC Source coverage: dotnet-framework-updatesIncomplete → Current
  5. 26 Oct 2026 · 22:55:57 UTC Source coverage: dotnet-framework-updatesCurrent → Incomplete
  6. 26 Oct 2026 · 16:46:58 UTC Source coverage: dotnet-framework-updatesIncomplete → Current
  7. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  8. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  9. 21 Oct 2026 · 10:34:24 UTC Source coverage: dotnet-framework-updatesCurrent → Incomplete
  10. 21 Oct 2026 · 04:01:31 UTC Source coverage: dotnet-framework-updatesIncomplete → Current
  11. 19 Oct 2026 · 15:12:40 UTC ReadinessThis is a .NET Framework servicing update, not a Windows OS build. Review Microsoft's support article and test the applicable framework versions; OS release-health coverage does not establish this update's deployment readiness.
  12. 19 Oct 2026 · 15:12:40 UTC CVEs named by Microsoft
  13. 19 Oct 2026 · 15:12:40 UTC Related KBsKB5126149
  14. 19 Oct 2026 · 15:12:40 UTC Applies toMicrosoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 → Windows Server 2022
  15. 19 Oct 2026 · 15:12:40 UTC Source coverage: windows-known-issuesCurrent → Not collected
  16. 19 Oct 2026 · 15:12:40 UTC Source coverage: dotnet-framework-updatesIncomplete
  17. 19 Oct 2026 · 15:12:40 UTC Link: KB5126149/windows/kb/KB5126149
  18. 19 Oct 2026 · 15:12:40 UTC Link: Support articlehttps://support.microsoft.com/help/5126422 → https://support.microsoft.com/en-us/servicing/dotnetframework/2026/09/september-8-2026-kb5126422-cumulative-update-for-net-framework-3-5-and-4-8-1-for-windows-server-2022
  19. 19 Oct 2026 · 15:12:40 UTC SourceMicrosoft release information, MSRC and Windows release health → Microsoft Learn and Support
  20. 19 Oct 2026 · 15:12:40 UTC KindWindows update → .NET Framework update
  21. 19 Oct 2026 · 15:12:40 UTC SummarySecurity update fixing 1 collected CVEs. → September 8, 2026-KB5126422 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022
  22. 16 Oct 2026 · 15:49:54 UTC CVEs listed directly for this KBCVE-2026-69522, CVE-2026-62886 → CVE-2026-69522
  23. 16 Oct 2026 · 15:49:54 UTC CVEs fixedCVE-2026-69522, CVE-2026-62886 → CVE-2026-69522
  24. 16 Oct 2026 · 15:49:54 UTC SummarySecurity update fixing 2 collected CVEs. → Security update fixing 1 collected CVEs.
  25. 14 Oct 2026 · 11:22:42 UTC Missing security releaseUnknown: security evidence is incomplete or retained → None identified in collected security coverage
  26. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current
ChangeIntel

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Sources read 11 Nov 16:19 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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