Patch tracker / KB5084815
KB5084815: Microsoft SQL Server 2025 for x64-base Security Update (April 2026)
KB5084815 is a High security update for Microsoft SQL Server 2025 for x64-base, released 2026-04-14. 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.
Update summary
New to these terms? How the Microsoft patching tools fit together, this month's Patch Tuesday summary, and every update ranked by real-world risk.
Senserva AI Opinion for KB5084815
KB5084815 patches three CVEs across SQL Server 2025 (CU3), 2022 (CU24), and 2017 (GDR), with the worst rated High at CVSS 8.8. Anyone running these SQL Server versions on x64 systems is exposed, and the CVSS 8.8 score suggests at least one flaw can be reached and exploited over a network connection to the database engine. No CVE here is in the CISA KEV catalog or linked to ransomware, and EPSS tops out at 1 percent, so this is important but not a fire drill.
Do this: Schedule the appropriate SQL Server servicing update (CU3 for 2025, CU24 for 2022, or the GDR for 2017) during your next maintenance window after validating in a test instance.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5084815
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5084815
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 <1%.
Among the lower half of tracked Microsoft updates by EPSS exploit probability.
What to do
Moderate priority: schedule it in your normal patch cycle. Senserva flags whether KB5084815 is missing on your devices.
Check if KB5084815 is installed
Copy-paste PowerShell: one machine, or your whole estate 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.
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-2026-32167 | High | 8.8 | <1% | No |
| CVE-2026-32176 | High | 8.8 | <1% | No |
| CVE-2026-33120 | High | 8.8 | <1% | No |
Affected products
Also released in April 2026
The highest-risk updates from the same release:
The full month, summarized: Microsoft Patch Tuesday.
Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.