Patch tracker / KB5082060
KB5082060: Windows 10 Version 1809 for 32-bit Sys Security Update (April 2026)
KB5082060 is a Critical security update for Windows 10 Version 1809 for 32-bit Sys, released 2026-04-14. It closes 121 CVEs with a maximum CVSS of 9.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. The most likely of them to be attacked is CVE-2026-20806, which FIRST.org rates at 73% probability of exploitation in the next 30 days.
Update summary
Fixes 121 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 73%. Among the top 25% of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Windows 11 Version 26H1 for ARM64-based Systems has shipped since this one: KB5094127 (2026-08-11). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.
Microsoft documents 2 known issues with this update.
- Domain controllers might restart repeatedly after installing this update
- Windows Server Update Services (WSUS) does not display error details
KB5082060 is a large April 2026 rollup for Windows 10 1809 and Windows Server 2019 that closes 122 CVEs, topped by a Critical issue rated CVSS 9.8 with a 64 percent EPSS score. At least one of these CVEs is listed in the CISA Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild, though none are currently tied to ransomware. The combination of a confirmed exploited flaw plus a near-worst-case 9.8 bug on legacy Server 2019 infrastructure makes this a priority for domain-joined server fleets still on 1809.
Do this: Deploy KB5082060 to your Windows Server 2019 and Windows 10 1809 systems now, prioritizing the internet-facing and domain controller hosts affected by the CISA 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 KB5082060
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5082060
- Released
- 2026-04-14
- Last changed
- 2026-08-24
- Changes tracked
- 5
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.
The strongest signal is the single recorded change on 2026-08-19, when the CVE fix count edged down from 122 to 121. That is a small decrease of one, which suggests a minor scope correction rather than a growing threat. With only one data point and a slightly narrowing count, KB5082060 looks stable, so review it on its normal patch schedule today.
- 2026-08-19 CVEs fixed 122 to 121
Recorded by Senserva on the dates shown, from the MSRC release feed. This is what moved and when, which neither the vendor advisory nor NVD publishes.
Check if KB5082060 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5082060 (checked 2026-08-27). Verify against the article before acting.
Domain controllers might restart repeatedly after installing this update
Symptom
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 domain controllers 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 KB5091571 .
Windows Server Update Services (WSUS) does not display error details
After installing KB5070879 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, CVE-2025-59287 .
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.
Scope and sources
- Affected products
- Also released in April 2026
KB5082052
115 CVEs · Critical · exploitedKB5082063
124 CVEs · Critical · exploitedKB5082123
107 CVEs · Critical · exploitedKB5082142
116 CVEs · Critical · exploitedKB5082198
87 CVEs · Critical · exploitedKB5082200
107 CVEs · Critical · exploitedKB5083768
119 CVEs · Critical · exploitedKB5083769
121 CVEs · Critical · exploitedThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.