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CVE-2025-54792

Estado: AnalizadaCrítica (9.3)—

LocalSend is an open-source app to securely share files and messages with nearby devices over local networks without needing an internet connection. In versions 1.16.1 and below, a critical Man-in-the-Middle (MitM) vulnerability in the software's discovery protocol allows an unauthenticated attacker on the same local network to impersonate legitimate devices, silently intercepting, reading, and modifying any file transfer. This can be used to steal sensitive data or inject malware, like ransomware, into files shared between trusted users. The attack is hardly detectable and easy to implement, posing a severe and immediate security risk. This issue was fixed in version 1.17.0.

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.

AV:A (red adyacente) + UI:P (interacción usuario para confiar en dispositivo falso) permite MitM en protocolo de descubrimiento. Impactos: lectura de datos (intercepción de archivos), manipulación (inyección de malware), distribución comprometida.

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

Encrypt Sensitive InformationVulnerability ScanningUser TrainingNetwork SegmentationNetwork Intrusion PreventionLimit Access to Resource Over Network

Tecnologías afectadas (1)

Localsend — Localsend

CWE

Referencias

JSON original (NVD)

Mostrar
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          "options": [
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      "value": "LocalSend is an open-source app to securely share files and messages with nearby devices over local networks without needing an internet connection. In versions 1.16.1 and below, a critical Man-in-the-Middle (MitM) vulnerability in the software's discovery protocol allows an unauthenticated attacker on the same local network to impersonate legitimate devices, silently intercepting, reading, and modifying any file transfer. This can be used to steal sensitive data or inject malware, like ransomware, into files shared between trusted users. The attack is hardly detectable and easy to implement, posing a severe and immediate security risk. This issue was fixed in version 1.17.0."
    },
    {
      "lang": "es",
      "value": "LocalSend es una aplicación de código abierto que permite compartir archivos y mensajes de forma segura con dispositivos cercanos a través de redes locales sin necesidad de conexión a internet. En las versiones 1.16.1 y anteriores, una vulnerabilidad crítica de Man-in-the-Middle (MitM) en el protocolo de descubrimiento del software permite a un atacante no autenticado en la misma red local suplantar la identidad de dispositivos legítimos, interceptando, leyendo y modificando silenciosamente cualquier transferencia de archivos. Esto puede utilizarse para robar datos confidenciales o inyectar malware, como ransomware, en archivos compartidos entre usuarios de confianza. El ataque es difícilmente detectable y fácil de implementar, lo que supone un riesgo de seguridad grave e inmediato. Este problema se solucionó en la versión 1.17.0."
    }
  ],
  "lastModified": "2026-06-17T09:40:42.807",
  "configurations": [
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