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Vulnerability record · CVE-2026-39813 · published 14 April 2026

CVE-2026-39813: Fortinet fortisandbox vulnerability

Fortinet · Fortisandbox

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.

9.8 CVSS 3.1 Critical EPSS 0.72% · top 48.0% CWE-24 · CWE-24
9.8CVSS 3.1 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
18 Jun 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-25089Fortinet FortiSandbox unauthenticated OS command injectionFortiSandbox, FortiSandbox Cloud and FortiSandbox PaaS fail to neutralize special elements in HTTP request handling, allowing OS command injection (C…KEVEPSS 76%analysed9.8CVE-2026-39808Fortinet FortiSandbox OS command injectionFortiSandbox 4.4.0 through 4.4.8 fails to neutralize special elements used in OS commands, allowing command injection. The flaw is remotely reachable…KEVEPSS 47%analysed9.8CVE-2026-26083Fortinet fortisandbox missing authorization vulnerabilityA missing authorization vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox Cloud 5.0.2 throug…EPSS 0.50%9.6CVE-2025-52436Fortinet fortisandbox cross-site scripting vulnerabilityAn Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox…EPSS 6.5%9.0CVE-2024-27781Fortinet fortisandbox cross-site scripting vulnerabilityAn improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.4, F…EPSS 28%8.8CVE-2025-53949Fortinet fortisandbox os command injection vulnerabilityAn Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78] vulnerability in Fortinet FortiS…EPSS 17%8.8CVE-2021-26105Fortinet fortisandbox out-of-bounds write vulnerabilityA stack-based buffer overflow vulnerability (CWE-121) in the profile parser of FortiSandbox version 3.2.2 and below, version 3.1.4 and below may allo…EPSS 0.50%8.8CVE-2024-54026Fortinet fortisandbox sql injection vulnerabilityAn improper neutralization of special elements used in an sql command ('sql injection') in Fortinet FortiSandbox 4.4.0 through 4.4.6, FortiSandbox 4.…EPSS 0.41%

Source: NIST National Vulnerability Database (record CVE-2026-39813), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.