Patch tracker / KB5065306
KB5065306: Windows Server 2022 Security Update (October 2025)
KB5065306 is a High security update for Windows Server 2022, released 2025-10-14. It closes 59 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 59 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.
KB5065306 is the October 14, 2025 rollup for Windows Server 2022 (including Server Core) and Windows 10 version 21H2 32-bit, closing 59 CVEs in one pass. The top issue rates High at CVSS 8.8 with a 19 percent EPSS, and none of the 59 are on CISA KEV or tied to ransomware yet, so this is a large-volume patch rather than an active-exploit fire drill.
Do this: Schedule this rollup across your Server 2022 and Windows 10 21H2 32-bit fleet in your next maintenance window, prioritizing internet-facing Server Core hosts.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5065306
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5065306
- 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 KB5065306 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.