CVE-2026-54118

Microsoft SQL Server Remote Code Execution Vulnerability

State: Published
Severity: 9.8 Critical
Published: Jul 14, 2026
Updated: Nov 1, 2026
Reserved: Jun 11, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Microsoft SQL Server 2016 Service Pack 3 (GDR)Microsoft	13.0.0 to before 13.0.6500.1Affected
Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature PackMicrosoft	13.0.0 to before 13.0.7095.1Affected
Microsoft SQL Server 2017 (CU 31)Microsoft	14.0.0 to before 14.0.3540.1Affected
Microsoft SQL Server 2017 (GDR)Microsoft	14.0.0 to before 14.0.2120.1Affected
Microsoft SQL Server 2019 (CU 32)Microsoft	15.0.0.0 to before 15.0.4480.2Affected
Microsoft SQL Server 2019 (GDR)Microsoft	15.0.0 to before 15.0.2180.2Affected
Microsoft SQL Server 2022 (GDR)Microsoft	16.0.0 to before 16.0.1190.2Affected
Microsoft SQL Server 2022 for x64-based Systems (CU 25)Microsoft	16.0.4260.1 to before 16.0.4262.2Affected
Microsoft SQL Server 2025 (CU 6)Microsoft	17.0.4060.2 to before 17.0.4060.2Affected
Microsoft SQL Server 2025 for x64-based Systems (GDR)Microsoft	17.0.1050.2 to before 17.0.1125.2Affected

References

Microsoft SQL Server Remote Code Execution Vulnerabilityvendor-advisorypatch

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