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CVE-2021-3331

Estado: ModificadaCrítica (9.8)—
Gravedad9.8Crítica · CVSS 3.1
Probabilidad de explotación7.70 %mayor que el 95 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

WinSCP anterior a la versión 5.17.10 permite a los atacantes remotos ejecutar programas arbitrarios cuando el manejador de URLs encuentra una URL manipulada que carga la configuración de la sesión. (Por ejemplo, esto es explotable en una instalación por defecto en la que WinSCP es el manejador de URLs sftp://)

CVSS

Puntuación base
9.8
Versión
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
7.70 %
Percentil entre todas las CVEs puntuadas
95
Fecha de la puntuación
24/10/2026

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).

Tecnologías afectadas (1)

Winscp — Winscp

CWE

Referencias

Mostrar las 8 referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-3331",
  "cveTags": [],
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          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-10-08T21:02:17.906285Z"
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          "confidentialityImpact": "COMPLETE"
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        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
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    "cvssMetricV31": [
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  "weaknesses": [
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          "value": "NVD-CWE-Other"
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    },
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    }
  ],
  "lastModified": "2026-10-08T21:17:39.890",
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  "sourceIdentifier": "cve@mitre.org"
}