Patch tracker / KB5065221
KB5065221: Microsoft SQL Server 2017 for x64-base Security Update (September 2025)
KB5065221 is a High security update for Microsoft SQL Server 2017 for x64-base, released 2025-09-09. It closes 2 CVEs with a maximum CVSS of 8.8. The most likely of them to be attacked is CVE-2025-47997, which FIRST.org rates at 33% probability of exploitation in the next 30 days.
Update summary
Fixes 2 CVEs. Most severe CVSS 8.8 (High). EPSS exploit probability up to 1.3%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Microsoft SQL Server 2017 for x64-based Systems (GDR) has shipped since this one: KB5101346 (2026-07-14). 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.
KB5065221 patches two flaws (CVE-2025-47997 and CVE-2025-55227) across SQL Server 2016 SP3, 2017, and 2019 GDR branches on x64. The top severity is High at CVSS 8.8, but EPSS sits at 1 percent and neither CVE is in CISA KEV or tied to ransomware. Because this is a GDR release, it targets shops that stayed on the security-only servicing train rather than cumulative updates.
Do this: Confirm which servicing branch each SQL Server instance is on and apply the matching GDR package (KB5065221) to your 2016 SP3, 2017, and 2019 x64 hosts.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5065221
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5065221
- Released
- 2025-09-09
- Last changed
- 2025-09-09
- Changes tracked
- 1
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 KB5065221 is installed
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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.
| CVE | Severity | CVSS | EPSS | Exploited |
|---|---|---|---|---|
| CVE-2025-55227 | High | 8.8 | 33% | No |
| CVE-2025-47997 | Medium | 6.5 | 33% | No |
Scope and sources
- Affected products
- Also released in September 2025
KB5002775
3 CVEs · HighKB5002778
3 CVEs · HighKB5002784
1 CVE · HighKB5065220
2 CVEs · HighKB5065222
3 CVEs · HighKB5065223
3 CVEs · HighKB5065224
3 CVEs · HighKB5065225
3 CVEs · HighThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.