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Recorded 20 Oct 2026 at 09:41 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.

KB5126145

September 8, 2026-KB5126145 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2

Permanent link to this revision

What it said

KB
KB5126145
Applies to
Windows 10, version 21H2; Windows 10, version 22H2
Related KBs
KB5126046, KB5126421
CVEs named by Microsoft
CVE-2026-62886, CVE-2026-69522
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.

Source evidence when recorded

dotnet-framework-updates
IncompleteRead 20 Oct 2026 at 09:41 UTC
Microsoft security releases
Complete at observationRead 20 Oct 2026 at 09:41 UTC

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

What changed

First observed 20 Oct 2026

No field changes in the recorded history.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 20 Oct 21:54 UTC · 257 of 260 readable · 255 fully read · documentation 416/439 current