Path Traversal in Fortinet FortiSandbox Enables Privilege Escalation

Publication date: 2026-04-14

Last updated on: 2026-06-18

Assigner: Fortinet, Inc.

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 Scores

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Meta Information

Published

2026-04-14

Last Modified

2026-06-18

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-39813

EUVD

EUVD-2026-22344

Affected Vendors & Products

Vendor	Product	Version / Range
fortinet	fortisandbox	From 4.4.0 (inc) to 4.4.9 (exc)
fortinet	fortisandbox	From 5.0.0 (inc) to 5.0.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-24	The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "../" sequences that can resolve to a location that is outside of that directory.

Attack-Flow Graph

Executive Summary

This vulnerability is a path traversal issue in Fortinet FortiSandbox versions 5.0.0 through 5.0.5 and 4.4.0 through 4.4.8. It allows an attacker to potentially escalate their privileges by exploiting the ability to access files or directories outside the intended scope using path traversal techniques.

Impact Analysis

The vulnerability can lead to a severe impact as it allows an attacker to escalate privileges without user interaction, potentially gaining high levels of control over the affected system. This can result in full compromise of confidentiality, integrity, and availability of the system.

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