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Remote Code Execution Vulnerability in Fortinet FortiSandbox Products

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

Severity Rating: CRITICAL

Software Affected

FortiSandbox versions 5.0.0 through 5.0.1

FortiSandbox versions 4.4.0 through 4.4.8

FortiSandbox Cloud all versions of 23 and 24

FortiSandbox Cloud versions 5.0.2 through 5.0.5

FortiSandbox PaaS versions all version of 23.4, 23.3, 23.1, 22.2, 22.1, 21.4 and 21.3

FortiSandbox PaaS versions 5.0.0 through 5.0.1

FortiSandbox PaaS versions 4.4.5 through 4.4.8

Overview

A vulnerability has been reported in Fortinet FortiSandbox products, which could allow an unauthenticated attacker to execute unauthorized code or commands on the targeted system.

Target Audience:

All organizations and individuals using Fortinet FortiSandbox products.

Risk Assessment:

High risk of remote unauthorized code execution on affected systems.

Impact Assessment:

High risk of information disclosure, privilege misuse, and full system compromise.

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.

The vulnerability exists in Fortinet FortiSandbox products due to improper authorization controls. An unauthenticated remote attacker could exploit this vulnerability by sending specially crafted HTTP requests to the targeted system.

Successful exploitation of this vulnerability could allow remote code execution on the affected system without authentication.

Solution

Apply appropriate updates as mentioned in the vendor advisory:

https://www.fortiguard.com/psirt/FG-IR-26-136

Vendor Information

Fortinet

https://www.fortiguard.com/psirt

References

Fortinet

https://www.fortiguard.com/psirt/FG-IR-26-136

CVE Name

CVE-2026-26083

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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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