CVE-2026-83945

Microsoft SQL Server Remote Code Execution Vulnerability

State: Published
Severity: 6.6 Medium
Published: Oct 13, 2026
Updated: Oct 31, 2026
Reserved: Aug 31, 2026

Description

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

Scores

CVSS	Score	Vector	Source
3.1	6.6 Medium	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
Microsoft SQL Server 2022 (GDR)Microsoft	16.0.0 to before 16.0.1210.3Affected
Microsoft SQL Server 2022 for x64-based Systems (CU27)Microsoft	16.0.4003.1 to before 16.0.4305.5Affected
Microsoft SQL Server 2025 for x64-based Systems (CU9)Microsoft	17.0.4006.2 to before 17.0.5015.4Affected
Microsoft SQL Server 2025 for x64-based Systems (GDR)Microsoft	17.0.1050.2 to before 17.0.1145.4Affected

References

Microsoft SQL Server Remote Code Execution Vulnerabilityvendor-advisorypatch

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