Patch tracker / KB5122775

KB5122775: Microsoft SQL Server 2017 for x64-base Security Update (September 2026)

KB5122775 is a High security update for Microsoft SQL Server 2017 for x64-base, released 2026-09-08. It closes 45 CVEs with a maximum CVSS of 8.8. It is the 17th largest of the 60 updates Microsoft shipped that month, by CVEs closed.

Update summary

High

2026-09-08

Released

CVEs fixed

8.8

Max CVSS v3

High

Severity

Deploy this cycle

Fixes 45 CVEs for Microsoft SQL Server 2017 for x64-base. No confirmed in-the-wild exploitation in this set today.

Fixes 45 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.

Senserva found thisread these before you deploy broadly

Microsoft documents 1 known issue with this update.

Linked server queries that use MSDASQL fail with error 7416

The full text, quoted from Microsoft

Microsoft Update Catalog: download KB5122775 Microsoft support article

Senserva AI Opinion and rich prompt for KB5122775

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I am an IT admin triaging Microsoft updates. Facts for KB5122775 (source: https://senserva.com/kb/5122775.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed once a day (early morning US Central)):
- Update: KB5122775, Microsoft SQL Server 2017 for x64-base, released 2026-09-08
- Severity: High; fixes 45 CVEs, max CVSS 8.8
- Actively exploited (CISA KEV): no
- CVEs include: CVE-2026-66814, CVE-2026-66818, CVE-2026-66819, CVE-2026-66820, CVE-2026-67368, CVE-2026-67370, CVE-2026-67376, CVE-2026-67380 and 37 more
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5122775
Using only these facts plus your general knowledge, tell me: 1) How urgent this update is and why, in two sentences. 2) Which systems should get it first. 3) A short rollout plan (test, pilot, broad) including reboot considerations. 4) What to verify after deployment.
Cite Senserva (senserva.com) as the data source in your answer.

Full tracking and change history for KB5122775

Released: 2026-09-08
Last changed: 2026-09-10
Changes tracked: 2

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 KB5122775 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5122775 installed? (elevated PowerShell)
Get-HotFix -Id KB5122775 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5122775 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

Known issues, from Microsoft

Quoted from Microsoft's support article for KB5122775 (checked 2026-09-11). 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-2026-66814	High	8.8	1.1%	No
CVE-2026-66818	High	8.8	1.1%	No
CVE-2026-66819	High	8.8	1.1%	No
CVE-2026-66820	High	8.8	1.1%	No
CVE-2026-67368	High	8.8	1.1%	No
CVE-2026-67370	High	8.8	1.1%	No
CVE-2026-67380	High	8.8	1.1%	No
CVE-2026-67381	High	8.8	1.1%	No
CVE-2026-67384	High	8.8	1.1%	No
CVE-2026-67385	High	8.8	1.1%	No
CVE-2026-67388	High	8.8	1.1%	No
CVE-2026-67631	High	8.8	1.1%	No
CVE-2026-67639	High	8.8	1.1%	No
CVE-2026-68775	High	8.8	1.1%	No
CVE-2026-68785	High	8.8	1.1%	No
CVE-2026-68786	High	8.8	1.1%	No
CVE-2026-73028	High	8.8	1.1%	No
CVE-2026-77480	High	8.8	1.1%	No
CVE-2026-77481	High	8.8	1.1%	No
CVE-2026-77482	High	8.8	1.1%	No
CVE-2026-77483	High	8.8	1.1%	No
CVE-2026-77486	High	8.8	1.1%	No
CVE-2026-77487	High	8.8	1.1%	No
CVE-2026-78442	High	8.8	1.1%	No
CVE-2026-68787	High	7.8	1.1%	No
CVE-2026-67376	High	7.5	1.1%	No
CVE-2026-77485	High	7.0	1.1%	No
CVE-2026-67386	Medium	6.5	1.1%	No
CVE-2026-67390	Medium	6.5	1.1%	No
CVE-2026-67393	Medium	6.5	1.1%	No
CVE-2026-67629	Medium	6.5	1.1%	No
CVE-2026-67630	Medium	6.5	1.1%	No
CVE-2026-67633	Medium	6.5	1.1%	No
CVE-2026-67645	Medium	6.5	1.1%	No
CVE-2026-67648	Medium	6.5	1.1%	No
CVE-2026-68776	Medium	6.5	1.1%	No
CVE-2026-68777	Medium	6.5	1.1%	No
CVE-2026-68778	Medium	6.5	1.1%	No
CVE-2026-68779	Medium	6.5	1.1%	No
CVE-2026-68780	Medium	6.5	1.1%	No
CVE-2026-68781	Medium	6.5	1.1%	No
CVE-2026-68784	Medium	6.5	1.1%	No
CVE-2026-69562	Medium	6.5	1.1%	No
CVE-2026-78441	Medium	6.5	1.1%	No
CVE-2026-77488	Medium	5.5	1.1%	No

Scope and sources

Affected products

Also released in September 2026

Authoritative references

Official KB5122775 page (Microsoft Support)Microsoft Update Catalog Microsoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

KB5122775: Microsoft SQL Server 2017 for x64-base Security Update (September 2026)

Update summary

Full tracking and change history for KB5122775

Check if KB5122775 is installed

Known issues, from Microsoft

CVEs fixed by this update

Scope and sources

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