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CVE-2025-66389

Estado: AnalizadaAlta (7.5)—

GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder (without user approval) via a file-handler URI parameter to fetch_webpage. Therefore, exfiltration could occur if there is indirect prompt injection.

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/PR:N/UI:N indica exposición remota sin privilegios (T1190). CWE-552 y 'filesystem access outside workspace' permiten lectura de archivos (T1005); 'exfiltration' sugiere envío de datos (T1567.002).

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

Vulnerability ScanningRestrict Web-Based ContentPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network Traffic

Tecnologías afectadas (1)

Microsoft — Github Copilot

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-66389",
  "cveTags": [],
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          "options": [
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          "timestamp": "2026-06-22T16:01:16.938063Z"
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    },
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  "lastModified": "2026-10-05T18:10:00.200",
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