Vulnerability · Published Sep 8, 2026 · Assigned by microsoft
CVE-2026-67376Microsoft SQL Server Denial of Service Vulnerability
High 7.5
In plain English
A high-severity integer overflow in Microsoft SQL Server 2017 (CU 31) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.2%top 32.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Integer overflow or wraparound in SQL Server allows an unauthorized attacker to deny service over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0 – before 14.0.3550.4 |
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0 – before 14.0.2130.4 |
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0 – before 15.0.4490.9 |
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0 – before 15.0.2190.7 |
| Microsoft | Microsoft SQL Server 2022 (CU 26) | 16.0.0.0 – before 16.0.4275.2 |
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0 – before 16.0.1200.5 |
| Microsoft | Microsoft SQL Server 2025 (CU8) | 17.0.0.0 – before 17.0.4085.5 |
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | 17.0.1050.2 – before 17.0.1135.8 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
References
- Microsoft SQL Server Denial of Service Vulnerability vendor-advisory, patch