VDB
CVE-2026-78456
CVE-2026-78456
PUBLISHED
CVSS 8.8 HIGH
Reported by microsoft · Published September 8, 2026
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Risk Scores
CVSS 3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SQL Server 2022 (CU 26) | 16.0.0.0 |
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0 |
| Microsoft | Microsoft SQL Server 2022 (CU 26) | 16.0.0.0 |
| microsoft | sql_server_2022 | 16.0.0.0, 16.0.0 |
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0 |
Timeline
- Sep 8, 2026 Coalition ESS Score
- Sep 8, 2026 CVE Published
- Sep 9, 2026 Security Advisory
- Sep 9, 2026 CVE Updated
References
- SQL Server Remote Code Execution Vulnerability vendor-advisorypatch