CVE-2026-12166

Little Orbit GameFirst Anti-CheatVulnerabilityCVSS 5.5

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.

No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.

Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.

CVE-2026-12166 Little Orbit GameFirst Anti-Cheat Vulnerability

Severity metrics

CVSS 3.1 : 5.5 MEDIUM

Attack vectorLocal

Attack complexityLow

Privileges requiredLow

User interactionNone

ScopeUnchanged

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected & fixed versions by distribution

Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.

No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.

Sources

Advisory NVD CVE.org

Published 2026-07-02 · updated 2026-07-26 · source: NVD