---
id: CVE-2025-53949
title: >-
  An Improper Neutralization of Special Elements used in an OS Command ('OS
  Command Injection') vulnerability [CWE-78] vulnerability in Fortinet
  FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.0 through 4.4.7,
  FortiSandbox 4.2 all versi…
summary: >-
  An Improper Neutralization of Special Elements used in an OS Command ('OS
  Command Injection') vulnerability [CWE-78] vulnerability in Fortinet
  FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.0 through 4.4.7,
  FortiSandbox 4.2 all versi…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: fortinet
product: fortisandbox
affected:
  - 'fortisandbox >= 4.0.0, <= 4.0.6'
  - 'fortisandbox >= 4.2.0, <= 4.2.8'
  - 'fortisandbox >= 4.4.0, <= 4.4.7'
  - 'fortisandbox >= 5.0.0, <= 5.0.2'
published: '2025-12-09'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T10:10:00.227'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-53949'
references:
  - url: 'https://fortiguard.fortinet.com/psirt/FG-IR-25-479'
    label: psirt@fortinet.com
tags:
  - nvd
epss: 0.17188
epssPercentile: 0.97024
ingestedAt: '2026-10-08T10:28:24.321Z'
---

## Overview

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an authenticated attacker to execute unauthorized code on the underlying system via crafted HTTP requests.

## Affected

- `fortisandbox >= 4.0.0, <= 4.0.6`
- `fortisandbox >= 4.2.0, <= 4.2.8`
- `fortisandbox >= 4.4.0, <= 4.4.7`
- `fortisandbox >= 5.0.0, <= 5.0.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.