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Multiple Vulnerabilities in Fortinet FortiSandbox

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

FortiSandbox versions 4.4.0 through 4.4.8

FortiSandbox versions 5.0.0 through 5.0.5

Overview

Multiple vulnerabilities have been reported in Fortinet FortiSandbox, which could allow an attacker to bypass authentication controls, escalate privileges and execute arbitrary code on the targeted system.

Target Audience:

All organizations and individuals using Fortinet FortiSandbox.

Risk Assessment:

High risk of complete system compromise.

Impact Assessment:

Execution of unauthorized code or commands, bypass authentication mechanisms, escalation of privilege and disclosure of sensitive information.

Description

Fortinet FortiSandbox is an advanced threat detection solution that isolates and analyzes suspicious files and URLs in a secure sandbox environment to identify zero-day and targeted attacks.

These vulnerabilities exist in FortiSandbox due to OS command injection and path traversal issues. An attacker can exploit these vulnerabilities by sending specially crafted HTTP requests.

Successful exploitation of these vulnerabilities could allow an attacker to bypass authentication controls, escalate privileges and execute arbitrary code on the targeted system.

Solution

Apply appropriate updates as mentioned in the vendor advisory:

https://www.fortiguard.com/psirt/FG-IR-26-100

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

Vendor Information

Fortinet

https://www.fortiguard.com/psirt

References

 

https://www.fortiguard.com/psirt/FG-IR-26-100

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

CVE Name

CVE-2026-39808

CVE-2026-39813

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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