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CVE-2025-34299

Estado: AnalizadaCrítica (9.3)—

Monsta FTP versions 2.11 and earlier contain a vulnerability that allows unauthenticated arbitrary file uploads. This flaw enables attackers to execute arbitrary code by uploading a specially crafted file from a malicious (S)FTP server.

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:N sin autenticación (PR:N) permite explotación remota de aplicación web expuesta (T1190). Carga de fichero malicioso sin validación (CWE-434) resulta en web shell (T1505.003) y ejecución de código arbitrario (T1059).

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

Privileged Account ManagementDisable or Remove Feature or ProgramVulnerability ScanningUser Account ManagementRestrict Web-Based ContentNetwork Segmentation

Tecnologías afectadas (1)

Monstaftp — Monsta FTP

CWE

Referencias

JSON original (NVD)

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          "id": "CVE-2025-34299",
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          "options": [
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            },
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              "technicalImpact": "total"
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          "version": "2.0.3",
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          "integrityImpact": "HIGH",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
        {
          "vendor": "Monsta Limited of New Zealand",
          "product": "Monsta FTP",
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  "published": "2025-11-07T14:15:49.920",
  "references": [
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      "url": "https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/",
      "tags": [
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      "url": "https://www.monstaftp.com/notes/",
      "tags": [
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      "url": "https://www.vulncheck.com/advisories/monsta-ftp-unauthenticated-arbitrary-file-upload",
      "tags": [
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    }
  ],
  "lastModified": "2026-06-17T09:13:49.160",
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