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CVE-2025-3033

Estado: ModificadaAlta (7.7)—

After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 137 and Thunderbird 137.

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.

Acceso local sin interacción (AV:L, PR:N, UI:N) sobre archivo de acceso directo malicioso Windows .url permite lectura y exfiltración de datos no autorizados con impacto confidencial e íntegra alto.

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

Data Loss PreventionThreat Intelligence ProgramNetwork Intrusion PreventionExecution PreventionApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (2)

Mozilla — FirefoxMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-3033",
  "cveTags": [],
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          "options": [
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    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-09-30T19:10:01.007",
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