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CVE-2026-4483

Estado: Pendiente de análisisAlta (7)—

An exposed IOCTL with an  insufficient access control vulnerability has been identified in the utility, MxGeneralIo, for Moxa’s industrial x86 computers. The affected utility, MxGeneralIo, exposes IOCTL methods that permit direct read and write access to MSR and system memory. A local attacker with high privileges could abuse these interfaces to perform unauthorized operations. Successful exploitation may result in privilege escalation on Windows 7 systems or cause a system crash (BSoD) on Windows 10 and 11 systems, leading to a denial-of-service condition. The vulnerability could slightly affect the confidentiality and integrity of the device, but availability might be heavily impacted. No impact to the subsequent system has been identified.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Moxa — MxgeneralioAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-4483",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4483",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-08T13:53:18.890748Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "psirt@moxa.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 7,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@moxa.com",
      "affectedData": [
        {
          "vendor": "Moxa",
          "product": "MxGeneralIo",
          "versions": [
            {
              "status": "affected",
              "version": "1.0",
              "lessThan": "1.4.0",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Windows 7 x86"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Moxa",
          "product": "MxGeneralIo",
          "versions": [
            {
              "status": "affected",
              "version": "1.0",
              "lessThan": "1.5.0",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Windows 10",
            "Windows 11"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Moxa",
          "product": "MxGeneralIo",
          "versions": [
            {
              "status": "affected",
              "version": "1.0",
              "lessThan": "1.4.0",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Windows 7 x64"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-04-08T08:16:24.007",
  "references": [
    {
      "url": "https://www.moxa.com/en/support/product-support/security-advisory/mpsa-254811-cve-2026-4483-exposed-ioctl-with-insufficient-access-control-vulnerability-in-the-utility-for-x86-computers",
      "source": "psirt@moxa.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@moxa.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-782"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An exposed IOCTL with an  insufficient access control vulnerability has been identified in the utility, MxGeneralIo, for Moxa’s industrial x86 computers. The affected utility, MxGeneralIo, exposes IOCTL methods that permit direct read and write access to MSR and system memory. A local attacker with high privileges could abuse these interfaces to perform unauthorized operations. Successful exploitation may result in privilege escalation on Windows 7 systems or cause a system crash (BSoD) on Windows 10 and 11 systems, leading to a denial-of-service condition. The vulnerability could slightly affect the confidentiality and integrity of the device, but availability might be heavily impacted. No impact to the subsequent system has been identified."
    },
    {
      "lang": "es",
      "value": "Un IOCTL expuesto con una vulnerabilidad de control de acceso insuficiente ha sido identificado en la utilidad, MxGeneralIo, para los ordenadores industriales x86 de Moxa. La utilidad afectada, MxGeneralIo, expone métodos IOCTL que permiten acceso directo de lectura y escritura a MSR y a la memoria del sistema. Un atacante local con privilegios elevados podría abusar de estas interfaces para realizar operaciones no autorizadas. La explotación exitosa puede resultar en escalada de privilegios en sistemas Windows 7 o causar un fallo del sistema (BSoD) en sistemas Windows 10 y 11, lo que lleva a una condición de denegación de servicio. La vulnerabilidad podría afectar ligeramente la confidencialidad e integridad del dispositivo, pero la disponibilidad podría verse gravemente impactada. Ningún impacto en el sistema subsiguiente ha sido identificado."
    }
  ],
  "lastModified": "2026-07-24T20:10:00.147",
  "sourceIdentifier": "psirt@moxa.com"
}