CVE-2026-96956 SQL Server Elevation of Privilege Vulnerability
An authorized attacker can exploit a stack-based buffer overflow in SQL Server to elevate privileges over the network.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-96956?
CVE-2026-96956 is a high-severity memory corruption vulnerability in Microsoft SQL Server 2017 (GDR), published on 13 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Stack-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
Weakness: CWE-121
Which versions are affected by CVE-2026-96956?
How do I fix CVE-2026-96956?
No fix has been published for CVE-2026-96956 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-96956 being exploited?
There is no known exploitation of CVE-2026-96956 in the wild and no public exploit code.
Sources
Also known as GHSA-wmj3-qpc2-vxj4.