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CVE-2021-25909

Estado: ModificadaAlta (7.5)—

ZIV Automation 4CCT-EA6-334126BF, versión de firmware 3.23.80.27.36371, permite a un atacante remoto no autenticado causar una condición de denegación de servicio en el dispositivo. Un atacante podría explotar esta vulnerabilidad mediante el envío de paquetes específicos hacia el puerto 7919

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).

Tecnologías afectadas (1)

Zivautomation — 4cct-ea6-334126bf Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-25909",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve-coordination@incibe.es",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve-coordination@incibe.es",
      "affectedData": [
        {
          "vendor": "ZIV AUTOMATION",
          "product": "4CCT-EA6-334126BF",
          "versions": [
            {
              "status": "affected",
              "version": "3.23.80.27.36371"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-01-29T14:15:12.277",
  "references": [
    {
      "url": "https://www.incibe-cert.es/en/early-warning/ics-advisories/4cct-vulnerable-denial-service-attack",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve-coordination@incibe.es"
    },
    {
      "url": "https://www.incibe-cert.es/en/early-warning/ics-advisories/4cct-vulnerable-denial-service-attack",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve-coordination@incibe.es",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ZIV Automation 4CCT-EA6-334126BF firmware version 3.23.80.27.36371, allows an unauthenticated, remote attacker to cause a denial of service condition on the device. An attacker could exploit this vulnerability by sending specific packets to the port 7919."
    },
    {
      "lang": "es",
      "value": "ZIV Automation 4CCT-EA6-334126BF, versión de firmware 3.23.80.27.36371, permite a un atacante remoto no autenticado causar una condición de denegación de servicio en el dispositivo. Un atacante podría explotar esta vulnerabilidad mediante el envío de paquetes específicos hacia el puerto 7919"
    }
  ],
  "lastModified": "2026-06-17T03:42:33.763",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:zivautomation:4cct-ea6-334126bf_firmware:3.23.80.27.36371:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DE6D5EE0-2721-4314-8D7E-25327DBB15BA"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
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              "matchCriteriaId": "132A81F8-0124-4ECA-B927-AD55C9FC6D0B"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "cve-coordination@incibe.es"
}