CVE-2025-41255
Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.
This issue affects Cyberduck through 9.1.6 and Mountain Duck through 4.17.5.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
- Puntuación base: 8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.19%
- Percentil entre todas las CVEs puntuadas: 8
- 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.
- Explotación
T1203Exploitation for Client Executionexecution85 % - Impacto principal
T1557Adversary-in-the-Middlecredential access · collection75 % - Impacto secundario
T1187Forced Authenticationcredential access70 %
AV:N + UI:R + S:C indica explotación en cliente con interacción (abrir archivo o conexión maliciosa). La instalación no autorizada de certificados falsificados en el almacén de Windows habilita suplantación (MITM) y robo de credenciales.
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
Tecnologías afectadas (2)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-266
Referencias
- https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655
- https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handling
- https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655
- https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handling
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-41255",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-41255",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-06-25T13:33:24.899723Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.8,
"exploitabilityScore": 1.6
}
]
},
"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": [
{
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"versionType": "semver",
"lessThanOrEqual": "4.17.5"
}
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"defaultStatus": "unaffected"
}
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],
"published": "2025-06-25T10:15:21.783",
"references": [
{
"url": "https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655",
"source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a"
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{
"url": "https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handling",
"source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a"
},
{
"url": "https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-vjjc-grpp-m655",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
},
{
"url": "https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250325-01_Cyberduck_Mountain_Duck_Certificate_Handling",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a",
"description": [
{
"lang": "en",
"value": "CWE-266"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Cyberduck and Mountain Duck improperly handle TLS certificate pinning for untrusted certificates (e.g., self-signed), unnecessarily installing it to the Windows Certificate Store of the current user without any restrictions.\n\n\n\n\n\n\n\n\n\n\n\nThis issue affects Cyberduck through 9.1.6 and 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), instalándolos innecesariamente en el almacén de certificados de Windows del usuario actual sin ninguna restricción. Este problema afecta a Cyberduck hasta la versión 9.1.6 y a Mountain Duck hasta la versión 4.17.5."
}
],
"lastModified": "2026-06-17T09:22:40.927",
"sourceIdentifier": "1e3a9e0f-5156-4bf8-b8a3-cc311bfc0f4a"
}