Patch tracker / KB5082198

KB5082198: Windows 10 Version 1809 for 32-bit Sys Security Update (April 2026)

KB5082198 is a Critical security update for Windows 10 Version 1809 for 32-bit Sys, released 2026-04-14. It closes 87 CVEs with a maximum CVSS of 9.8. 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

Critical
2026-04-14
Released
87
CVEs fixed
9.8
Max CVSS
Critical
Severity
Deploy this cycle
Fixes 87 CVEs for Windows 10 Version 1809 for 32-bit Sys. No confirmed in-the-wild exploitation in this set today.

Fixes 87 CVEs. Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 56%. Among the top 25% of tracked Microsoft updates by EPSS exploit probability.

Senserva found thisread these before you deploy broadly

Microsoft documents 1 known issue with this update.

  • Domain controllers might restart repeatedly after installing this update

The full text, quoted from Microsoft

Microsoft Update Catalog: download KB5082198Microsoft support article
Senserva AI Opinion for KB5082198

KB5082198 is a large April 2026 rollup fixing 88 CVEs, including one already listed in the CISA KEV catalog (exploited in the wild, though not tied to ransomware) and a Critical flaw rated CVSS 9.8 with a 64 percent EPSS exploitation-likelihood score. It applies to Windows 11 26H1 on both ARM64 and x64 plus the older Windows 10 1809 on 32-bit systems, so both new and legacy fleets are exposed. The combination of a confirmed exploited CVE and a near-worm-grade Critical bug makes this a priority cycle rather than a routine one.

Do this: Deploy KB5082198 immediately to internet-facing and legacy Windows 10 1809 hosts first, then complete the rest of the Windows 11 26H1 fleet within the standard maintenance window.

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

Senserva AI Opinion and rich prompt for KB5082198

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

Full tracking and change history for KB5082198

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 KB5082198 is installed

Elevated PowerShell. No output means it is not installed.

Known issues, from Microsoft

Quoted from Microsoft's support article for KB5082198 (checked 2026-07-28). Verify against the article before acting.

Domain controllers might restart repeatedly after installing this update

Symptoms

After installing this update, domain controllers in environments with multiple domains in the forest that use Privileged Access Management (PAM), might experience LSASS crashes during startup. As a result, affected DCs might restart repeatedly, preventing authentication and directory services from functioning, and potentially rendering the domain unavailable.

Resolution

This issue is addressed in out-of-band update KB5091572 .

Remote Desktop security warnings might not display correctly

Symptoms

After installing this update, the security warning that appears when opening Remote Desktop (RDP) files might not display correctly in some cases.

This issue might occur when you use more than one monitor with different display scaling settings (for example, one display set to 100% and another set to 125%). When this happens, the warning window might show overlapping text or partially hidden buttons, which can make the message difficult to read or interact with.

Resolution

This issue is resolved in Windows updates released on and after May 12, 2026 (such as KB5087537 ). We recommend you install the latest Windows update for your device as it contains important improvements and issue resolutions, including this one.

Applies to: Windows 10 Enterprise LTSB 2016 and Windows 10 IoT Enterprise 2016 LTSB

This ...

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-2026-0390Critical9.856%No
CVE-2026-20928Critical9.856%No
CVE-2026-23670Critical9.856%No
CVE-2026-25250Critical9.856%No
CVE-2026-26151Critical9.856%No
CVE-2026-26152Critical9.856%No
CVE-2026-26154Critical9.856%No
CVE-2026-26155Critical9.856%No
CVE-2026-26156Critical9.856%No
CVE-2026-26159Critical9.856%No
CVE-2026-26160Critical9.856%No
CVE-2026-26162Critical9.856%No
CVE-2026-26163Critical9.856%No
CVE-2026-26167Critical9.856%No
CVE-2026-26168Critical9.856%No
CVE-2026-26169Critical9.856%No
CVE-2026-26170Critical9.856%No
CVE-2026-26173Critical9.856%No
CVE-2026-26174Critical9.856%No
CVE-2026-26175Critical9.856%No
CVE-2026-26176Critical9.856%No
CVE-2026-26177Critical9.856%No
CVE-2026-26178Critical9.856%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-2026-27911Critical9.856%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-2026-27928Critical9.856%No
CVE-2026-27929Critical9.856%No
CVE-2026-27930Critical9.856%No
CVE-2026-32068Critical9.856%No
CVE-2026-32070Critical9.856%No
CVE-2026-32071Critical9.856%No
CVE-2026-32072Critical9.856%No
CVE-2026-32073Critical9.856%No
CVE-2026-32075Critical9.856%No
CVE-2026-32077Critical9.856%No
CVE-2026-32079Critical9.856%No
CVE-2026-32080Critical9.856%No
CVE-2026-32081Critical9.856%No
CVE-2026-32082Critical9.856%No
CVE-2026-32083Critical9.856%No
CVE-2026-32084Critical9.856%No
CVE-2026-32085Critical9.856%No
CVE-2026-32086Critical9.856%No
CVE-2026-32087Critical9.856%No
CVE-2026-32089Critical9.856%No
CVE-2026-32090Critical9.856%No
CVE-2026-32091Critical9.856%No
CVE-2026-32093Critical9.856%No
CVE-2026-32149Critical9.856%No
CVE-2026-32150Critical9.856%No
CVE-2026-32151Critical9.856%No
CVE-2026-32154Critical9.856%No
CVE-2026-32156Critical9.856%No
CVE-2026-32157Critical9.856%No
CVE-2026-32164Critical9.856%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-2026-33098Critical9.856%No
CVE-2026-33099Critical9.856%No
CVE-2026-33100Critical9.856%No
CVE-2026-33104Critical9.856%No
CVE-2026-33824Critical9.856%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

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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 KB5082198 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.