Patch tracker / KB5082126

KB5082126: Windows 10 Version 1809 for 32-bit Sys Security Update (April 2026)

KB5082126 is a High security update for Windows 10 Version 1809 for 32-bit Sys, released 2026-04-14. It closes 61 CVEs with a maximum CVSS of 8.8. The most likely of them to be attacked is CVE-2026-25250, which FIRST.org rates at 56% probability of exploitation in the next 30 days.

Update summary

High
2026-04-14
Released
61
CVEs fixed
8.8
Max CVSS
High
Severity
Deploy this cycle
Fixes 61 CVEs for Windows 10 Version 1809 for 32-bit Sys. No confirmed in-the-wild exploitation in this set today.

Fixes 61 CVEs. Most severe CVSS 8.8 (High). EPSS exploit probability up to 3.5%. Among the top half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thisread these before you deploy broadly

Microsoft documents 1 known issue with this update.

  • We are currently not aware of any issues with this update. For the most up-to-date information about known issues for Windows Server 2012 R2, please...

The full text, quoted from Microsoft

Microsoft Update Catalog: download KB5082126Microsoft support article
Senserva AI Opinion for KB5082126

KB5082126 is a large April 2026 rollup fixing 62 CVEs across Windows 11 26H1 (ARM64 and x64) and Windows 10 1809, with a top rating of High (CVSS 8.8). One of its CVEs is on the CISA KEV list, meaning it is confirmed exploited in the wild, and the highest EPSS of 64% signals a real near-term exploitation likelihood even though none of the flaws are tied to known ransomware campaigns.

Do this: Deploy KB5082126 to your 26H1 and 1809 systems now, prioritizing internet-facing and privileged hosts given the KEV-listed CVE.

AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5082126

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5082126

Released
2026-04-14
Last changed
2026-07-29
Changes tracked
2

Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.

Check if KB5082126 is installed

Elevated PowerShell. No output means it is not installed.

Known issues, from Microsoft

Quoted from Microsoft's support article for KB5082126 (checked 2026-07-22). Verify against the article before acting.

We are currently not aware of any issues with this update. For the most up-to-date information about known issues for Windows Server 2012 R2, please go to the Windows release health dashboard .

CVEs fixed by this update

Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.

CVESeverityCVSSEPSSExploited
CVE-2025-64720Critical9.856%No
CVE-2025-65018Critical9.856%No
CVE-2026-25250Critical9.856%No
CVE-2026-26151Critical9.856%No
CVE-2026-26152Critical9.856%No
CVE-2026-26154Critical9.856%No
CVE-2026-26159Critical9.856%No
CVE-2026-26160Critical9.856%No
CVE-2026-26162Critical9.856%No
CVE-2026-26163Critical9.856%No
CVE-2026-26168Critical9.856%No
CVE-2026-26173Critical9.856%No
CVE-2026-26174Critical9.856%No
CVE-2026-26176Critical9.856%No
CVE-2026-26177Critical9.856%No
CVE-2026-26180Critical9.856%No
CVE-2026-26182Critical9.856%No
CVE-2026-26183Critical9.856%No
CVE-2026-27908Critical9.856%No
CVE-2026-27909Critical9.856%No
CVE-2026-27910Critical9.856%No
CVE-2026-27912Critical9.856%No
CVE-2026-27913Critical9.856%No
CVE-2026-27914Critical9.856%No
CVE-2026-27915Critical9.856%No
CVE-2026-27916Critical9.856%No
CVE-2026-27917Critical9.856%No
CVE-2026-27919Critical9.856%No
CVE-2026-27920Critical9.856%No
CVE-2026-27921Critical9.856%No
CVE-2026-27922Critical9.856%No
CVE-2026-27923Critical9.856%No
CVE-2026-27925Critical9.856%No
CVE-2026-27929Critical9.856%No
CVE-2026-27930Critical9.856%No
CVE-2026-32068Critical9.856%No
CVE-2026-32070Critical9.856%No
CVE-2026-32073Critical9.856%No
CVE-2026-32075Critical9.856%No
CVE-2026-32077Critical9.856%No
CVE-2026-32082Critical9.856%No
CVE-2026-32083Critical9.856%No
CVE-2026-32084Critical9.856%No
CVE-2026-32086Critical9.856%No
CVE-2026-32087Critical9.856%No
CVE-2026-32093Critical9.856%No
CVE-2026-32150Critical9.856%No
CVE-2026-32151Critical9.856%No
CVE-2026-32156Critical9.856%No
CVE-2026-32157Critical9.856%No
CVE-2026-32183Critical9.856%No
CVE-2026-32212Critical9.856%No
CVE-2026-32214Critical9.856%No
CVE-2026-32217Critical9.856%No
CVE-2026-32225Critical9.856%No
CVE-2026-33099Critical9.856%No
CVE-2026-33100Critical9.856%No
CVE-2026-33104Critical9.856%No
CVE-2026-33826Critical9.856%No
CVE-2026-33827Critical9.856%No
CVE-2026-33829Critical9.856%No

Scope and sources

Affected products
Also released in April 2026

KB5002853

2 CVEs · Medium · exploited

KB5002854

2 CVEs · Medium · exploited

KB5002861

2 CVEs · Medium · exploited

KB5082052

115 CVEs · Critical

KB5082060

121 CVEs · Critical

KB5082063

124 CVEs · Critical

KB5082123

107 CVEs · Critical

KB5082142

116 CVEs · Critical

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5082126 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.