CVE-2026-21262

SQL Server Elevation of Privilege Vulnerability

State: Published
Severity: 8.8 High
Published: Mar 10, 2026
Updated: Jun 19, 2026
Reserved: Dec 11, 2025

Description

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	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	microsoft

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
Microsoft SQL Server 2016 Service Pack 3 (GDR)Microsoft	13.0.0 to before 13.0.6480.4Affected
Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature PackMicrosoft	13.0.0 to before 13.0.7075.5Affected
Microsoft SQL Server 2017 (CU 31)Microsoft	14.0.0 to before 14.0.3520.4Affected
Microsoft SQL Server 2017 (GDR)Microsoft	14.0.0 to before 14.0.2100.4Affected
Microsoft SQL Server 2019 (CU 32)Microsoft	15.0.0.0 to before 15.0.4460.4Affected
Microsoft SQL Server 2019 (GDR)Microsoft	15.0.0 to before 15.0.2160.4Affected
Microsoft SQL Server 2022 (GDR)Microsoft	16.0.0 to before 16.0.1170.5Affected
Microsoft SQL Server 2022 for x64-based Systems (CU 23)Microsoft	16.0.0.0 to before 16.0.4240.4Affected
Microsoft SQL Server 2025 (CU 2)Microsoft	17.0.0.0 to before 17.0.4020.2Affected
Microsoft SQL Server 2025 for x64-based Systems (GDR)Microsoft	17.0.1050.2 to before 17.0.1105.2Affected

References

SQL Server Elevation of Privilege Vulnerabilityvendor-advisorypatch

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