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Fencer Vulns
high 8.8

CVE-2026-40370 json

SQL Server Remote Code Execution Vulnerability

published 2026-05-12 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-29652

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

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

Patch / fix

  • Microsoft Microsoft SQL Server 2016 Service Pack 3 (GDR) 13.0.6490.1
  • Microsoft Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack 13.0.7085.1
  • Microsoft Microsoft SQL Server 2017 (CU 31) 14.0.3530.2
  • Microsoft Microsoft SQL Server 2017 (GDR) 14.0.2110.2
  • Microsoft Microsoft SQL Server 2019 (CU 32) 15.0.4470.1
  • Microsoft Microsoft SQL Server 2019 (GDR) 15.0.2170.1
  • Microsoft Microsoft SQL Server 2022 (GDR) 16.0.1180.1
  • Microsoft Microsoft SQL Server 2022 for x64-based Systems (CU 24) 16.0.4252.3
  • Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1115.1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 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
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Microsoft SQL Server 2016 Service Pack 3 (GDR)
  • Microsoft Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack
  • Microsoft Microsoft SQL Server 2017 (CU 31)
  • Microsoft Microsoft SQL Server 2017 (GDR)
  • Microsoft Microsoft SQL Server 2019 (CU 32)
  • Microsoft Microsoft SQL Server 2019 (GDR)
  • Microsoft Microsoft SQL Server 2022 (GDR)
  • Microsoft Microsoft SQL Server 2022 for x64-based Systems (CU 24)
  • Microsoft Microsoft SQL Server 2025 (CU 4)
  • Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR)

Classification

Weakness
  • CWE-73 External Control of File Name or Path
  • CWE-610 Externally Controlled Reference to a Resource in Another Sphere
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.