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CVE-2026-25067

Estado: AnalizadaMedia (6.9)—

SmarterTools SmarterMail versions prior to build 9518 contain an unauthenticated path coercion vulnerability in the background-of-the-day preview endpoint. The application base64-decodes attacker-supplied input and uses it as a filesystem path without validation. On Windows systems, this allows UNC paths to be resolved, causing the SmarterMail service to initiate outbound SMB authentication attempts to attacker-controlled hosts. This can be abused for credential coercion, NTLM relay attacks, and unauthorized network authentication.

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)

Smartertools — Smartermail

CWE

Referencias

JSON original (NVD)

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          "version": "2.0.3",
          "timestamp": "2026-01-29T17:51:38.523562Z"
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        "cvssData": {
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          "version": "4.0",
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      "url": "https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-background-of-the-day-path-coercion",
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        "VDB Entry"
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      "description": [
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          "value": "CWE-706"
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      ]
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  "descriptions": [
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      "lang": "en",
      "value": "SmarterTools SmarterMail versions prior to build 9518  contain an unauthenticated path coercion vulnerability in the background-of-the-day preview endpoint. The application base64-decodes attacker-supplied input and uses it as a filesystem path without validation. On Windows systems, this allows UNC paths to be resolved, causing the SmarterMail service to initiate outbound SMB authentication attempts to attacker-controlled hosts. This can be abused for credential coercion, NTLM relay attacks, and unauthorized network authentication."
    },
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      "lang": "es",
      "value": "Las versiones de SmarterTools SmarterMail anteriores a la compilación 9518 contienen una vulnerabilidad de coerción de ruta no autenticada en el endpoint de vista previa del fondo del día. La aplicación decodifica en base64 la entrada suministrada por el atacante y la utiliza como una ruta del sistema de archivos sin validación. En sistemas Windows, esto permite que las rutas UNC se resuelvan, haciendo que el servicio SmarterMail inicie intentos de autenticación SMB salientes a hosts controlados por el atacante. Esto puede ser abusado para la coerción de credenciales, ataques de retransmisión NTLM y autenticación de red no autorizada."
    }
  ],
  "lastModified": "2026-06-17T10:24:04.260",
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