9.8
Critical
CVE-2026-67643 Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network
Description
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft SQL Server 2022 (CU 26) 16.0 | 16.0.0.0 → < 16.0.4275.2 | 16.0.4275.2 |
| Microsoft SQL Server 2022 (GDR) 16.0 | 16.0.0 → < 16.0.1200.5 | 16.0.1200.5 |
| Microsoft SQL Server 2025 (CU8) 17.0 | 17.0.0.0 → < 17.0.4085.5 | 17.0.4085.5 |
| Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0 | 17.0.1050.2 → < 17.0.1135.8 | 17.0.1135.8 |
References
- Microsoft SQL Server Remote Code Execution Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
Other CVEs of Microsoft SQL Server 2022 (CU 26)
The 53 CVEs of Microsoft SQL Server 2022 (CU 26) →
CVE-2026-88083
Stack-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network
7.5
High
CVE-2026-77481
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network
8.8
High
CVE-2026-67645
Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network
6.5
Medium
CVE-2026-67624
Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network
6.5
Medium