CVE-2026-67379: CWE-121: Stack-based Buffer Overflow in Microsoft Microsoft SQL Server 2019 (CU 32)
Description
CVE-2026-67379 is a stack-based buffer overflow vulnerability in Microsoft SQL Server 2019 (CU 32) that allows an authorized attacker to execute code remotely over a network. The vulnerability affects multiple versions of Microsoft SQL Server 2019 and later branches prior to specific fixed builds. It has a high severity with a CVSS score of 8.5. An official fix is available from Microsoft.
CVSS v3.1
Score 8.5high
Affected software
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)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-67379) is a stack-based buffer overflow in Microsoft SQL Server 2019 (CU 32) and related versions. It enables an attacker with limited privileges to execute arbitrary code remotely over the network. The flaw is classified under CWE-121 (stack-based buffer overflow). The vulnerability affects several version ranges across SQL Server 2019, 2022, and 2024 branches prior to the fixed builds. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected SQL Server instances. The attacker requires low privileges but must be authorized and able to connect over the network. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67379 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-29T14:57:03.841Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67379","vendor":"Microsoft"}]
Threat ID: 6aa044c9acd9273b49fa7b3e
Added to database: 09/08/2026, 17:24:25 UTC
Last enriched: 10/16/2026, 20:50:44 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 27
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