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Microsoft Security Response CenterCVE-2026-54117

Microsoft SQL Server Remote Code Execution Vulnerability

Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.

Read the vendor bulletin Get alerts for Microsoft SQL Server 2025 for x64-based Systems (GDR)
9.8CVSS out of 10Critical severity
Scope

What the vendor says is affected

  • Microsoft SQL Server 2025 for x64-based Systems (GDR)
  • Microsoft SQL Server 2025 for x64-based Systems (CU6)

Versions the vendor lists as fixed

  • 17.0.1125.2
  • 17.0.4060.2
Next step

What the vendor recommends

Install KB5102333. Install KB5101346.

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. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-54117View CVSS, KEV, EPSS, and threat context
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