CVE-2026-67376 Microsoft SQL Server Denial of Service Vulnerability
An integer overflow in Microsoft SQL Server allows unauthorized attackers to cause a denial of service over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67376?
CVE-2026-67376 is a high-severity vulnerability in Microsoft Sql Server 2017, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Integer overflow or wraparound in SQL Server allows an unauthorized attacker to deny service over a network.
Weakness: CWE-190
Which versions are affected by CVE-2026-67376?
It affects 4 products.
Products include Microsoft Sql Server 2017, Microsoft Sql Server 2019, Microsoft Sql Server 2022, Microsoft Sql Server 2025.
How do I fix CVE-2026-67376?
No fix has been published for CVE-2026-67376 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-67376 being exploited?
There is no known exploitation of CVE-2026-67376 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sql Server 2017
- CVE-2026-67631 Microsoft SQL Server Remote Code Execution Vulnerability
- CVE-2026-66814 Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66818 Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66819 Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66820 SQL Server Elevation of Privilege Vulnerability
Sources
Also known as GHSA-w8gp-wffp-fvg4.