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CVE-2025-41256

Estado: AplazadaAlta (7.4)—

Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.

This issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.

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.

Vector AV:N sin privilegios ni interacción confirma T1190. Debilitamiento de pinning TLS (CWE-328) con SHA-1 facilita MITM (T1557) e interceptación de datos (T1041) sobre conexiones supuestamente seguras.

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

Network SegmentationNetwork Intrusion PreventionLimit Access to Resource Over NetworkFilter Network TrafficVulnerability ScanningUser Training

Tecnologías afectadas (2)

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

Cyberduck — CyberduckAIMountain Duck — Mountain DuckAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-41256",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-41256",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-06-25T13:34:04.627890Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.4,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a",
      "affectedData": [
        {
          "repo": "https://github.com/iterate-ch/cyberduck",
          "vendor": "iterate GmbH",
          "product": "Cyberduck",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "9.1.6"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "iterate GmbH",
          "product": "Mountain Duck",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "4.17.5"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-06-25T10:15:22.610",
  "references": [
    {
      "url": "https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv",
      "source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a"
    },
    {
      "url": "https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash",
      "source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a"
    },
    {
      "url": "https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    },
    {
      "url": "https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-02_Cyberduck_Mountain_Duck_Weak_Hash",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a",
      "description": [
        {
          "lang": "en",
          "value": "CWE-328"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.\n\n\n\n\n\n\n\nThis issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5."
    },
    {
      "lang": "es",
      "value": "Cyberduck y Mountain Duck gestionan incorrectamente la fijación de certificados TLS para certificados no confiables (p. ej., autofirmados), ya que la huella digital del certificado se almacena como SHA-1, aunque SHA-1 se considera débil. Este problema afecta a Cyberduck: hasta la versión 9.1.6; Mountain Duck: hasta la versión 4.17.5."
    }
  ],
  "lastModified": "2026-06-17T09:22:41.027",
  "sourceIdentifier": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a"
}