Patch tracker / KB5077465
KB5077465: Microsoft SQL Server 2017 for x64-base Security Update (March 2026)
KB5077465 is a High security update for Microsoft SQL Server 2017 for x64-base, released 2026-03-10. It closes 2 CVEs with a maximum CVSS of 8.8. It is the 23rd largest of the 38 updates Microsoft shipped that month, by CVEs closed.
Update summary
Fixes 2 CVEs. Most severe CVSS 8.8 (High). EPSS exploit probability up to 2.0%. 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.
KB5077465 patches two SQL Server engine vulnerabilities (CVE-2026-21262 and CVE-2026-26115) across the 2016 SP3, 2017, and 2019 GDR branches, with the higher rated flaw at High severity and CVSS 8.8. Anyone running these older on-premises SQL Server builds is exposed, though neither CVE is in CISA KEV and EPSS remains low at 2 percent. The 8.8 score signals a network-reachable issue worth closing on database hosts that accept remote connections.
Do this: Apply the matching GDR update to your SQL Server 2016 SP3, 2017, and 2019 x64 instances, scheduling maintenance windows for internet or broadly network exposed database servers first.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5077465
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5077465
- Released
- 2026-03-10
- Last changed
- 2026-03-10
- 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 KB5077465 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-2026-21262 | High | 8.8 | 2.0% | No |
| CVE-2026-26115 | High | 8.8 | 2.0% | No |
Scope and sources
- Affected products
- Also released in March 2026
KB5002843
3 CVEs · HighKB5002845
4 CVEs · HighKB5002850
4 CVEs · HighKB5077464
2 CVEs · HighKB5077466
3 CVEs · HighKB5077468
3 CVEs · HighKB5077469
2 CVEs · HighKB5077470
2 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.