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Microsoft Security Response CenterCVE-2026-40370

SQL Server Remote Code Execution Vulnerability

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

Read the vendor bulletin Get alerts for Microsoft SQL Server 2025 for x64-based Systems (CU4)
8.8CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft SQL Server 2025 for x64-based Systems (CU4)
  • Microsoft SQL Server 2022 for x64-based Systems (CU 24)
  • Microsoft SQL Server 2017 for x64-based Systems (GDR)
  • Microsoft SQL Server 2019 for x64-based Systems (GDR)
  • Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR)
  • Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature Pack
  • Microsoft SQL Server 2017 for x64-based Systems (CU 31)
  • Microsoft SQL Server 2022 for x64-based Systems (GDR)
  • Microsoft SQL Server 2025 for x64-based Systems (GDR)
  • Microsoft SQL Server 2019 for x64-based Systems (CU 32)

Versions the vendor lists as fixed

  • 17.0.4040.1
  • 16.0.4252.3
  • 14.0.2110.2
  • 15.0.2170.1
  • 13.0.6490.1
  • 13.0.7085.1
  • 14.0.3530.2
  • 16.0.1180.1
  • 17.0.1115.1
  • 15.0.4470.1
Next step

What the vendor recommends

Install KB5089899. Install KB5089900. Install KB5090347. Install KB5090408. Install KB5089271. Install KB5089270. Install KB5090354. Install KB5091158. Install KB5091223. Install KB5090407.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-40370View CVSS, KEV, EPSS, and threat context
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