CVE-2026-12166 CVE-2026-12166
A local attacker can cause a system crash in the GFAC anti-cheat driver via a NULL pointer dereference.
- 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-2026-12166?
CVE-2026-12166 is a medium-severity vulnerability in Little Orbit GameFirst Anti-Cheat, published on 2 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A NULL pointer dereference vulnerability for driver `GFAC_Sys_x64.sys` in Little Orbit GFAC allows a local attacker to cause a denial of service via crafted requests that trigger a system crash.
Which versions are affected by CVE-2026-12166?
How do I fix CVE-2026-12166?
No fix has been published for CVE-2026-12166 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-12166 being exploited?
There is no known exploitation of CVE-2026-12166 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-rp8q-7vcj-j55j.