Advisoriesby IbisMicrosoftCVE-2026-67381
Microsoft SQL Server: heap buffer overflow
Fix: upgrade to 14.0.3550.4 or later (8 fixed versions below)
Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft SQL Server 2017 (CU 31) Product | >= 14.0.0, < 14.0.3550.4 | 14.0.3550.4 |
| Microsoft SQL Server 2017 (GDR) Product | >= 14.0.0, < 14.0.2130.4 | 14.0.2130.4 |
| Microsoft SQL Server 2019 (CU 32) Product | >= 15.0.0.0, < 15.0.4490.9 | 15.0.4490.9 |
| Microsoft SQL Server 2019 (GDR) Product | >= 15.0.0, < 15.0.2190.7 | 15.0.2190.7 |
| Microsoft SQL Server 2022 (CU 26) Product | >= 16.0.0.0, < 16.0.4275.2 | 16.0.4275.2 |
| Microsoft SQL Server 2022 (GDR) Product | >= 16.0.0, < 16.0.1200.5 | 16.0.1200.5 |
| Microsoft SQL Server 2025 (CU8) Product | >= 17.0.0.0, < 17.0.4085.5 | 17.0.4085.5 |
| Microsoft SQL Server 2025 for x64-based Systems (GDR) Product | >= 17.0.1050.2, < 17.0.1135.8 | 17.0.1135.8 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-122