CVE-2026-78456
SQL Server Remote Code Execution Vulnerability
- State
- Published
- Severity
- 8.8 High
- Published
- Sep 8, 2026
- Updated
- Oct 31, 2026
- Reserved
- Aug 24, 2026
Description
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | 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 | microsoft |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
Microsoft SQL Server 2022 (CU 26)Microsoft |
|
Microsoft SQL Server 2022 (GDR)Microsoft |
|
References
- SQL Server Remote Code Execution Vulnerabilityvendor-advisorypatch
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.