Patch tracker / KB5102340
KB5102340: Microsoft SQL Server 2025 for x64-base Security Update (July 2026)
KB5102340 is a High security update for Microsoft SQL Server 2025 for x64-base, released 2026-07-14. It closes 4 CVEs with a maximum CVSS of 8.8. It is the 47th largest of the 62 updates Microsoft shipped that month, by CVEs closed.
Update summary
Fixes 4 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.
Microsoft documents 1 known issue with this update.
- Linked server queries that use MSDASQL fail with error 7416
KB5102340 is a Security Update for SQL Server 2016 Service Pack 3 on the GDR servicing branch, released in the July 2026 cycle. The per-update CVE detail is still provisional since Microsoft has not published it yet, and the release document maps no named zero-days to this specific update, so there is no evidence of active exploitation targeting it right now. Anyone still running the SP3 baseline on the GDR branch rather than the cumulative update branch is the audience for this one.
Do this: Confirm your SQL Server 2016 SP3 instances are on the GDR branch, then stage KB5102340 in a test environment before pushing it to database servers.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5102340
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5102340
- Released
- 2026-07-14
- Last changed
- 2026-07-14
- 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 KB5102340 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5102340 (checked 2026-08-11). Verify against the article before acting.
Linked server queries that use MSDASQL fail with error 7416
Linked server queries that use the MSDASQL (OLE DB Provider for ODBC Drivers) provider and specify a provider string (@ provstr ) fail and return the following error message:
Msg 7416, Level 16
Access to the remote server is denied because no login-mapping exists.
A stricter connection validation check in the Database Engine can reject connections for certain linked server configurations that use the MSDASQL provider, even if earlier builds allowed those connections.
For more information and workarounds, see Linked server queries that use MSDASQL fail with error 7416.
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-2026-47295 | High | 8.8 | 1.3% | No |
| CVE-2026-54118 | High | 8.8 | 1.3% | No |
| CVE-2026-55002 | High | 8.8 | 1.3% | No |
| CVE-2026-47296 | High | 7.5 | 1.3% | No |
Scope and sources
- Affected products
- Also released in July 2026
KB5099444
185 CVEs · Critical · exploitedKB5099445
174 CVEs · Critical · exploitedKB5099535
261 CVEs · Critical · exploitedKB5099536
389 CVEs · Critical · exploitedKB5099538
312 CVEs · Critical · exploitedKB5099539
314 CVEs · Critical · exploitedKB5099540
326 CVEs · Critical · exploitedKB5101649
383 CVEs · 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.