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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0265
Remote Code Execution Vulnerability in Fortinet FortiSandbox Products

Original Issue Date:May 25, 2026

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

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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