CVE-2026-39813

Estado: ModificadaCrítica (9.8)—

A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via specially crafted HTTP requests.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 9.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.72%
Percentil entre todas las CVEs puntuadas: 52
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access92 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation88 %
Impacto secundarioT1005 Data from Local Systemcollection72 %

Vector CVSS:3.1 AV:N/AC:L/PR:N indica explotación remota sin autenticación (T1190). Path traversal CWE-24 en aplicación web expuesta permite escalada de privilegios (T1068) y acceso a datos sensibles (T1005).

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

Application Isolation and Sandboxing Exploit Protection Update Software Vulnerability Scanning Threat Intelligence Program Privileged Account Management

Tecnologías afectadas (1)

Fortinet — Fortisandbox

CWE

CWE-24

Referencias

https://fortiguard.fortinet.com/psirt/FG-IR-26-112

JSON original (NVD)

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