Patch tracker / KB5128496

KB5128496: SQL Server 2017 Security Update (October 2026)

KB5128496 is a High security update for SQL Server 2017, released 2026-10-13. It closes 12 CVEs with a maximum CVSS of 8.8. It is the 40th largest of the 55 updates Microsoft shipped that month, by CVEs closed.

Update summary

High

2026-10-13

Released

CVEs fixed

8.8

Max CVSS v3

High

Severity

Deploy this cycle

Fixes 12 CVEs for SQL Server 2017. No confirmed in-the-wild exploitation in this set today.

Fixes 12 CVEs. Most severe CVSS 8.8 (High).

Microsoft Update Catalog: download KB5128496 Microsoft support article

Senserva AI Opinion and rich prompt for KB5128496

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 KB5128496 (source: https://senserva.com/kb/5128496.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed daily (early morning US Central)):
- Update: KB5128496, SQL Server 2017, released 2026-10-13
- Severity: High; fixes 12 CVEs, max CVSS 8.8
- Actively exploited (CISA KEV): no
- CVEs include: CVE-2026-67625, CVE-2026-67628, CVE-2026-68883, CVE-2026-70189, CVE-2026-85886, CVE-2026-85888, CVE-2026-88081, CVE-2026-88085 and 4 more
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5128496
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 KB5128496

Released: 2026-10-13
Last changed: 2026-10-13
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 KB5128496 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5128496 installed? (elevated PowerShell)
Get-HotFix -Id KB5128496 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5128496 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

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-2026-94512	High	8.8	-	No
CVE-2026-67625	High	8.5	-	No
CVE-2026-68883	High	8.5	-	No
CVE-2026-85886	High	8.5	-	No
CVE-2026-96956	High	8.0	-	No
CVE-2026-85888	High	7.7	-	No
CVE-2026-88081	High	7.7	-	No
CVE-2026-70189	Medium	6.7	-	No
CVE-2026-88089	Medium	6.7	-	No
CVE-2026-88085	Medium	6.4	-	No
CVE-2026-67628	Medium	4.9	-	No
CVE-2026-94520	Medium	4.9	-	No

Scope and sources

Affected products

Microsoft SQL Server 2017 for x64-based Systems (CU31)

Also released in October 2026

Authoritative references

Official KB5128496 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.

KB5128496: SQL Server 2017 Security Update (October 2026)

Update summary

Full tracking and change history for KB5128496

Check if KB5128496 is installed

CVEs fixed by this update

Scope and sources

KB5126646

KB5126651

KB5126653

KB5126655

KB5126657

KB5126836

KB5126868

KB5127646