CVE-2026-21262

Published: Mar 10, 2026

Modified: Apr 14, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

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

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

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

vendor-advisory

patch

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