CVE-2026-12167: Little Orbit Gamefirst Anti-Cheat

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

The Minifilter communication port for driver `GFAC_Sys_x64.sys` in Little Orbit GFAC allows a local attacker to access privileged driver functionality via a communication interface that lacks appropriate access restrictions.

Affected products

• Little Orbit Gamefirst Anti-Cheat: up to and including 2025-07-07

Published 2026-07-02. Last modified 2026-07-02.