Advisoriesby IbisMicrosoftCVE-2026-96956
Microsoft SQL Server: stack buffer overflow
Fix: upgrade to 14.0.2140.2 or later (8 fixed versions below)
Stack-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 (GDR) Product | >= 14.0.0, < 14.0.2140.2 | 14.0.2140.2 |
| Microsoft SQL Server 2017 for x64-based Systems (CU31) Product | >= 14.0.3006.16, < 14.0.3560.2 | 14.0.3560.2 |
| Microsoft SQL Server 2019 (GDR) Product | >= 15.0.0, < 15.0.2200.2 | 15.0.2200.2 |
| Microsoft SQL Server 2019 for x64-based Systems (CU32) Product | >= 15.0.4003.23, < 15.0.4500.2 | 15.0.4500.2 |
| Microsoft SQL Server 2022 (GDR) Product | >= 16.0.0, < 16.0.1210.3 | 16.0.1210.3 |
| Microsoft SQL Server 2022 for x64-based Systems (CU27) Product | >= 16.0.4003.1, < 16.0.4305.5 | 16.0.4305.5 |
| Microsoft SQL Server 2025 for x64-based Systems (CU9) Product | >= 17.0.4006.2, < 17.0.5015.4 | 17.0.5015.4 |
| Microsoft SQL Server 2025 for x64-based Systems (GDR) Product | >= 17.0.1050.2, < 17.0.1145.4 | 17.0.1145.4 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-121