CVE-2026-82765

Estado: AplazadaAlta (8.6)—

Path traversal vulnerability exists in Contec FX5000 series, FX4000 series, and FX3000 series. If this vulnerability is exploited, arbitrary files on the server may be viewed and/or altered by an attacker who can access the product via FTP.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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
Puntuación base: 8.6

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.49%
Percentil entre todas las CVEs puntuadas: 40
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1005 Data from Local Systemcollection90 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact75 %

Path traversal en servicio FTP accesible remotamente por usuario autenticado (PR:L). Permite lectura (VC:H) y modificación (VI:H) de archivos arbitrarios en el servidor.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability Scanning Threat Intelligence Program Restrict File and Directory Permissions Privileged Account Management Remote Data Storage Network Segmentation

Tecnologías afectadas (3)

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

Contec — Fx3000^AI Contec — Fx4000^AI Contec — Fx5000^AI

CWE

CWE-23

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-82765",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-82765",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-14T14:51:39.805889Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "vultures@jpcert.or.jp",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "vultures@jpcert.or.jp",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.6,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "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": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA5000",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA5020",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA5020-[][]",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE5000",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE5000-[][]",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXS5000-[][]",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXS5021",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.12.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE4000",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.14.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE4000-WP",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.14.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXS4000",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.14.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXS4020",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.14.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA3000",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA3000-[][]",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA3020",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA3020-[][]",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXA3200",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE3000",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE3000-[][]",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXE3000-WP",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Contec Co., Ltd.",
          "product": "FXS300[]-CN",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.20.00",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-14T07:17:17.553",
  "references": [
    {
      "url": "https://jvn.jp/en/vu/JVNVU99009004/",
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_fl_26091000_en.pdf",
      "source": "vultures@jpcert.or.jp"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "vultures@jpcert.or.jp",
      "description": [
        {
          "lang": "en",
          "value": "CWE-23"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Path traversal vulnerability exists in Contec FX5000 series, FX4000 series, and FX3000 series. If this vulnerability is exploited, arbitrary files on the server may be viewed and/or altered by an attacker who can access the product via FTP."
    }
  ],
  "lastModified": "2026-09-16T19:27:25.623",
  "sourceIdentifier": "vultures@jpcert.or.jp"
}