CVE-2026-12167
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...
- Published
- Jul 2, 2026
- Updated
- Jul 2, 2026
- Assigning CNA
- certcc
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 4.3%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1- CVE-2026-12166_CVE-2026-12167_CVE-2026-12168Informational
Technical advisory detailing three local privilege escalation vulnerabilities (CVE-2026-12166/7/8) in the Little Orbit GFAC kernel driver, including NULL pointer dereference, improper access control, and arbitrary kernel memory write leading to SYSTEM compromise.
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