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CVE-2026-12166

Full vulnerability record from the local CVENow database.

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.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-07-02 15:16:56.927000
Last modified
2026-10-25 21:10:00.770000
View original CVE JSON
{
  "id": "CVE-2026-12166",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-02T15:16:56.927",
  "lastModified": "2026-10-25T21:10:00.770",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de desreferencia de puntero NULL para el controlador ’GFAC_Sys_x64.sys’ en Little Orbit GFAC permite a un atacante local causar una denegación de servicio mediante solicitudes manipuladas que provocan un bloqueo del sistema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Little Orbit",
          "product": "GameFirst Anti-Cheat",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "2025-07-07",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-02T17:35:09.610134Z",
          "id": "CVE-2026-12166",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "references": [
    {
      "url": "https://github.com/FzRsLLaSheR/CVE-2026-12166_CVE-2026-12167_CVE-2026-12168",
      "source": "[email protected]"
    },
    {
      "url": "https://kb.cert.org/vuls/id/639124",
      "source": "[email protected]"
    },
    {
      "url": "https://www.littleorbit.com/",
      "source": "[email protected]"
    }
  ]
}