CVE-2026-94512: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft SQL Server 2017 (GDR)
Description
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 8.8high
Affected software
Microsoft
Microsoft SQL Server 2017 (GDR)
Microsoft
Microsoft SQL Server 2017 for x64-based Systems (CU31)
Microsoft
Microsoft SQL Server 2019 (GDR)
Microsoft
Microsoft SQL Server 2019 for x64-based Systems (CU32)
Microsoft
Microsoft SQL Server 2022 (GDR)
Microsoft
Microsoft SQL Server 2022 for x64-based Systems (CU27)
Microsoft
Microsoft SQL Server 2025 for x64-based Systems (CU9)
Microsoft
Microsoft SQL Server 2025 for x64-based Systems (GDR)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-94512) is a heap-based buffer overflow in Microsoft SQL Server 2017 (GDR) and later versions. It enables an attacker with authorized access to execute arbitrary code remotely over a network. The flaw affects multiple version ranges of Microsoft SQL Server 2017 and subsequent releases up to certain fixed versions. Microsoft has published an official security update to address this issue. The CVSS 3.1 score is 8.8, indicating high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely, potentially leading to full compromise of the affected SQL Server instance. The vulnerability impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94512 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-21T18:23:52.966Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-94512","vendor":"Microsoft"}]
Threat ID: 6ace9d332cdf04f656af1da5
Added to database: 10/13/2026, 21:05:55 UTC
Last enriched: 10/13/2026, 21:18:14 UTC
Last updated: 10/13/2026, 22:05:40 UTC
Views: 5
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