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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-54117

Microsoft SQL Server: unsafe deserialization

Microsoft

CVE-2026-54117 · Published Jul 14, 2026 · updated Aug 20, 2026

Critical9.8
Fix: upgrade to 17.0.4060.2 or later (2 fixed versions below)
Microsoft advisory

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

Affected versions

PackageAffectedFixed in
Microsoft SQL Server 2025 (CU 6)
Product
>= 17.0.4060.2, < 17.0.4060.217.0.4060.2
Microsoft SQL Server 2025 for x64-based Systems (GDR)
Product
>= 17.0.1050.2, < 17.0.1125.217.0.1125.2
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-502

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