CVE-2026-67643
Critical
9.8 CVSS v3.1
- Published
- Sep 8, 2026
- Updated
- Sep 17, 2026
- Vendor
- Microsoft
- Affected versions
- See affected products
- Weakness
- CWE-122
Summary
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Severity
Critical (9.8)CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
- Microsoft Sql Server 2022 < 16.0.1200.5
- Microsoft Sql Server 2022 >= 16.0.4003.1, < 16.0.4275.2
- Microsoft Sql Server 2025 < 17.0.1135.8
- Microsoft Sql Server 2025 >= 17.0.4006.2, < 17.0.4085.5
Exploitation status
Unknown
Technical details
Technical analysis has not been written for this record yet.
Mitigation & remediation
Follow the vendor advisory linked below for patches and workarounds.