Patch tracker / KB5065227
KB5065227: Microsoft SQL Server 2017 for x64-base Security Update (September 2025)
KB5065227 is a High security update for Microsoft SQL Server 2017 for x64-base, released 2025-09-09. It closes 3 CVEs with a maximum CVSS of 8.8. Get it from the Microsoft Update Catalog below, and see where it sits against the rest of the month on the patch tracker.
Microsoft security update released 2025-09-09. Fixes 3 CVEs.
No exploitation is confirmed yet, but the EPSS model puts the 30-day exploitation probability for the worst CVE here at 33%, which is high enough to treat this as more urgent than its High label alone suggests. Attackers reverse-engineer Patch Tuesday updates within days, so the safe assumption is that exploit code follows the patch.
SQL Server updates deploy per instance, usually via the downloaded package or your server patching tool rather than client update rings. The install guidance below covers the options. For the bigger picture: how the Microsoft patching tools fit together, this month's Patch Tuesday summary, and every update ranked by real-world risk.
Updated July 24, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Download KB5065227
Get the official update for KB5065227. The download and file size for each supported product are on the Microsoft Update Catalog page.
Update summary
Senserva AI Opinion for KB5065227
KB5065227 patches three CVEs across SQL Server 2016 SP3, 2017, and 2019 (all x64 GDR builds), with the worst rated High at CVSS 8.8 and a top EPSS of 33 percent. One included fix, CVE-2024-21907, is notably older than the September 2025 release date, suggesting a bundled component or dependency issue carried forward into these database engines. None of the three are in CISA KEV or tied to ransomware, so this is a plan-and-schedule update rather than an emergency.
Do this: Inventory your SQL Server 2016 SP3, 2017, and 2019 instances, then schedule KB5065227 into your next maintenance window with a validated backup and rollback plan before applying.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5065227
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5065227
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.
Exploitation and severity
Fixes 3 CVEs. Most severe CVSS 8.8 (High). EPSS exploit probability up to 33%.
Among the top 25% of tracked Microsoft updates by EPSS exploit probability.
What to do
Elevated priority: high severity or a meaningful exploitation probability, sooner if an affected product is internet-facing. Senserva flags whether KB5065227 is missing on your devices.
Check if KB5065227 is installed
Copy-paste PowerShell: one machine, or your whole fleet in one pass. No output means the update is not installed.
Get-HotFix covers Windows updates. Office, SharePoint, and Exchange server updates show under installed updates in Programs and Features, or check the Update Catalog history.
Writing about KB5065227? Cite this page
Copy-paste for a blog post, forum answer, or internal doc. The link always carries the current risk data.
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-2024-21907 | High | 8.8 | 33% | No |
| CVE-2025-47997 | High | 8.8 | 33% | No |
| CVE-2025-55227 | High | 8.8 | 33% | No |
Affected products
Also released in September 2025
The highest-risk updates from the same release:
The full month, summarized: Microsoft Patch Tuesday.
How to install KB5065227
This is a SQL Server update. It deploys per instance:
- Manual or scripted install of the package from the Update Catalog above, instance by instance, starting with test.
- Microsoft Update can offer SQL Server updates when the machine opts in to updates for other Microsoft products.
- Verify afterward by checking the instance build number against the update's target build.
Common questions about KB5065227
Is KB5065227 urgent?
KB5065227 is rated High. Include it in your normal patch cycle unless your environment raises its priority.
How do I download KB5065227?
From the Microsoft Update Catalog (linked on this page), or let Intune, Windows Update for Business, Windows Autopatch, or WSUS deliver it. The catalog page lists the download for each supported product.
How do I deploy KB5065227 with Intune?
Assign a Windows Update ring (quality update policy) to the device groups and the update flows on the ring's deferral schedule. For urgent updates, Intune expedite policies can bypass the ring deferrals. Verify the rollout with update compliance reporting rather than assuming delivery.
Can I ask my own AI about KB5065227?
Yes. This page includes a free, ready-to-paste AI prompt containing KB5065227's key facts: severity, CVE count, exploitation status, and the download link. Copy it into Claude, ChatGPT, or Copilot for a rollout plan; the data is refreshed three times a day (5 AM, 12:30 PM, and 7 PM US Central).
Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.
