Is CVE-2026-40370 in the CISA KEV catalog?

No. CVE-2026-40370 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-40370?

CVE-2026-40370 has a CVSS v3 base score of 8.8 (Important).

What is the EPSS score for CVE-2026-40370?

CVE-2026-40370 has an EPSS score of 0.56% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40370?

Install KB5089271 for Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR). Fixes are available for 10 affected products.

CVE & CISA-KEV Catalog

CVE-2026-40370

HIGH

8.8

CVSS v3

NVD

Description

External control of file name or path in SQL Server allows an authorized attacker to execute code over a network.

CWE-73External Control of File Name or Path CWE-610

How to fix

Remediation Available

Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR)Microsoft

Install:KB5089271Microsoft

Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature PackMicrosoft

Install:KB5089270Microsoft

Microsoft SQL Server 2017 for x64-based Systems (CU 31)Microsoft

Install:KB5090354Microsoft

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

Install:KB5090347Microsoft

Microsoft SQL Server 2019 for x64-based Systems (CU 32)Microsoft

Install:KB5090407Microsoft

Microsoft SQL Server 2019 for x64-based Systems (GDR)Microsoft

Install:KB5090408Microsoft

Microsoft SQL Server 2022 for x64-based Systems (CU 24)Microsoft

Install:KB5089900Microsoft

Microsoft SQL Server 2022 for x64-based Systems (GDR)Microsoft

Install:KB5091158Microsoft

Microsoft SQL Server 2025 for x64-based Systems (CU4)Microsoft

Install:KB5089899Microsoft

Microsoft SQL Server 2025 for x64-based Systems (GDR)Microsoft

Install:KB5091223Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploit Intelligence

0.56%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Vendor Advisory1

msrc.microsoft.com

Related Vulnerabilities

Other CWE-73 (External Control of File Name or Path) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-39952	Critical	9.8	100%	-	Fix
CVE-2024-8517	Critical	9.8	95%	-	Fix
CVE-2023-4634	Critical	9.8	83%	-	Fix
CVE-2018-17246	Critical	9.8	82%	-	Fix
CVE-2025-33053	High	8.8	82%	KEV	Fix
CVE-2024-43451	Medium	6.5	82%	KEV	Fix

Embed a live status badge for CVE-2026-40370

Markdown

[![CVE-2026-40370](https://tridentstack.com/cve/badge/CVE-2026-40370.svg)](https://tridentstack.com/cve/CVE-2026-40370)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-40370"><img src="https://tridentstack.com/cve/badge/CVE-2026-40370.svg" alt="CVE-2026-40370"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-18.