CVE-2026-85876 Microsoft SQL Server Elevation of Privilege Vulnerability
An authorized local attacker can exploit a use-after-free flaw in Microsoft SQL Server to elevate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-85876?
CVE-2026-85876 is a high-severity use after free vulnerability in Microsoft SQL Server 2019 (GDR), published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free in SQL Server allows an authorized attacker to elevate privileges locally.
Weakness: CWE-416
Which versions are affected by CVE-2026-85876?
How do I fix CVE-2026-85876?
No fix has been published for CVE-2026-85876 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-85876 being exploited?
There is no known exploitation of CVE-2026-85876 in the wild and no public exploit code.
Sources
Also known as GHSA-wv9g-3m24-8332.