CVE-2026-12166: CWE-476 NULL Pointer Dereference in Little Orbit GameFirst Anti-Cheat
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.
AI Analysis
Technical Summary
The vulnerability CVE-2026-12166 affects the Little Orbit GameFirst Anti-Cheat software, specifically the kernel driver GFAC_Sys_x64.sys. It involves a NULL pointer dereference that can be triggered by a local attacker sending crafted requests, resulting in a system crash and denial of service. The vulnerability is publicly disclosed but lacks a CVSS score and official remediation guidance. No affected versions or patches are currently documented, and no known exploits have been reported.
Potential Impact
A local attacker can cause a denial of service on the affected system by exploiting the NULL pointer dereference in the anti-cheat driver, leading to a system crash. This disrupts normal operation but does not indicate privilege escalation or data compromise based on the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory and CERT advisory at https://kb.cert.org/vuls/id/639124 for current remediation guidance. Until an official fix is available, restrict local access to trusted users to reduce risk.
CVE-2026-12166: CWE-476 NULL Pointer Dereference in Little Orbit GameFirst Anti-Cheat
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.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-12166 affects the Little Orbit GameFirst Anti-Cheat software, specifically the kernel driver GFAC_Sys_x64.sys. It involves a NULL pointer dereference that can be triggered by a local attacker sending crafted requests, resulting in a system crash and denial of service. The vulnerability is publicly disclosed but lacks a CVSS score and official remediation guidance. No affected versions or patches are currently documented, and no known exploits have been reported.
Potential Impact
A local attacker can cause a denial of service on the affected system by exploiting the NULL pointer dereference in the anti-cheat driver, leading to a system crash. This disrupts normal operation but does not indicate privilege escalation or data compromise based on the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory and CERT advisory at https://kb.cert.org/vuls/id/639124 for current remediation guidance. Until an official fix is available, restrict local access to trusted users to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- certcc
- Date Reserved
- 2026-06-12T19:40:24.620Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://kb.cert.org/vuls/id/639124","vendor":"CERT"}]
Threat ID: 6a46823927e9c7971990308d
Added to database: 07/02/2026, 15:22:33 UTC
Last enriched: 07/02/2026, 15:51:30 UTC
Last updated: 07/02/2026, 18:16:17 UTC
Views: 6
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