CVE-2026-67639

high Microsoft
CVSS v3 Base Score
8.8
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 Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: September 8, 2026 (2 days ago)
Last Modified: September 9, 2026
Vendor: Microsoft
Source: MITRE

Description

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

CWE

CWE-122

Affected Products

Microsoft Microsoft SQL Server 2017 (CU 31)Microsoft Microsoft SQL Server 2017 (GDR)Microsoft Microsoft SQL Server 2019 (CU 32)Microsoft Microsoft SQL Server 2019 (GDR)Microsoft Microsoft SQL Server 2022 (CU 26)Microsoft Microsoft SQL Server 2022 (GDR)Microsoft Microsoft SQL Server 2025 (CU8)Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR)

References

🔗 msrc.microsoft.com