CVE-2026-77482

Microsoft SQL Server Remote Code Execution Vulnerability

State: Published
Severity: 8.8 High
Published: Sep 8, 2026
Updated: Oct 31, 2026
Reserved: Aug 20, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 2017 (CU 31)Microsoft	14.0.0 to before 14.0.3550.4Affected
Microsoft SQL Server 2017 (GDR)Microsoft	14.0.0 to before 14.0.2130.4Affected
Microsoft SQL Server 2019 (CU 32)Microsoft	15.0.0.0 to before 15.0.4490.9Affected
Microsoft SQL Server 2019 (GDR)Microsoft	15.0.0 to before 15.0.2190.7Affected

References

Microsoft SQL Server Remote Code Execution Vulnerabilityvendor-advisorypatch

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