Patch tracker / KB5102338
KB5102338: Microsoft SQL Server 2025 for x64-base Security Update (July 2026)
KB5102338 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
KB5102338 is a Security Update for SQL Server 2017 on x64 systems, shipped through the GDR servicing branch during the July 2026 Patch Tuesday cycle. The per-update CVE detail is still provisional because Microsoft has not published it for this cycle yet, and the MSRC release document maps no named zero-days to this specific update. Exposure is limited to hosts still running the SQL Server 2017 GDR branch, so this is relevant if you have kept those instances on security-only servicing rather than moving to cumulative updates.
Do this: Identify which of your SQL Server 2017 instances are on the GDR branch and stage KB5102338 for them, since the cumulative update branch requires a different package.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5102338
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5102338
- 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 KB5102338 is installed
Elevated PowerShell. No output means it is not installed.
Known issues, from Microsoft
Quoted from Microsoft's support article for KB5102338 (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.