What’s Vulnerable › Vulnerabilities
CVE-2026-67638: Microsoft SQL Server Remote Code Execution Vulnerability
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-08 · updated 2026-10-31
- Weakness: CWE-122
Description
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Affected products
- Microsoft Sql Server 2025: before 17.0.1135.8; from 17.0.4006.2 before 17.0.4085.5 — fixed in 17.0.1135.8, 17.0.4085.5
- Microsoft SQL Server 2025 (CU8): from 17.0.0.0 before 17.0.4085.5 — fixed in 17.0.4085.5
- Microsoft SQL Server 2025 for x64-based Systems (GDR): from 17.0.1050.2 before 17.0.1135.8 — fixed in 17.0.1135.8
How to fix
Upgrade to a fixed version: Microsoft Sql Server 2025 17.0.1135.8, 17.0.4085.5; Microsoft SQL Server 2025 (CU8) 17.0.4085.5; Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1135.8. Check the vendor advisory for mitigations.
References
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