CVE-2026-67636: CWE-125: Out-of-bounds Read in Microsoft Microsoft SQL Server 2019 (CU 32)
Description
CVE-2026-67636 is a critical out-of-bounds read vulnerability in Microsoft SQL Server 2019 (CU 32) that allows an unauthorized 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. An official fix is available from Microsoft.
CVSS v3.1
Score 9.0critical
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, identified as CWE-125 (Out-of-bounds Read), exists in Microsoft SQL Server 2019 (CU 32) and related versions. It allows an attacker without privileges to read memory outside the intended bounds, which can lead to remote code execution. The CVSS v3.1 score is 9.0 (critical), reflecting network attack vector, high impact on confidentiality, integrity, and availability, and requiring no user interaction. Multiple affected version ranges are explicitly stated, and Microsoft has released an official fix.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized attacker to execute arbitrary code remotely on affected Microsoft SQL Server instances, potentially leading to full system compromise. The impact includes complete loss of confidentiality, integrity, and availability of the affected system.
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-2026-67636 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-29T22:49:19.796Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67636","vendor":"Microsoft"}]
Threat ID: 6aa044cdacd9273b49fa7ba4
Added to database: 09/08/2026, 17:24:29 UTC
Last enriched: 10/16/2026, 20:51:59 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 30
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