Patch tracker / KB5065431
KB5065431: Windows Server 2022 Security Update (October 2025)
KB5065431 is a High security update for Windows Server 2022, released 2025-10-14. It closes 50 CVEs with a maximum CVSS of 8.8. The most likely of them to be attacked is CVE-2025-59290, which FIRST.org rates at 20% probability of exploitation in the next 30 days.
Update summary
Fixes 50 CVEs. Most severe CVSS 8.8 (High). EPSS exploit probability up to 20%. Among the top half of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Windows Server 2022 has shipped since this one: KB5073695 (2026-01-13). 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.
KB5065431 is the October 14, 2025 rollup for Windows Server 2022 (including Server Core) and Windows 10 version 21H2 32-bit, closing 50 CVEs in a single patch. The top issue rates High severity at CVSS 8.8 with an EPSS of 19 percent, so exploitation probability is elevated even though none of these CVEs are in CISA KEV or tied to ransomware yet. The volume alone (50 fixes across server and client builds) makes this a broad-surface update worth prioritizing.
Do this: Deploy KB5065431 to your Server 2022 and Windows 10 21H2 32-bit fleet this cycle, starting with internet-facing and domain controller servers.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5065431
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5065431
- Released
- 2025-10-14
- Last changed
- 2026-08-10
- 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 KB5065431 is installed
Elevated PowerShell. No output means it is not installed.
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 October 2025
KB5070879
1 CVE · Critical · exploitedKB5070881
1 CVE · Critical · exploitedKB5070882
1 CVE · Critical · exploitedKB5070883
1 CVE · Critical · exploitedKB5070884
1 CVE · Critical · exploitedKB5070886
1 CVE · Critical · exploitedKB5070887
1 CVE · Critical · exploitedKB5070892
1 CVE · 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.