CVE-2025-52436: Fortinet FortiSandbox

Critical severity, CVSS 9.6. EPSS: 7.3% chance of exploitation in the next 30 days.

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to execute commands via crafted requests.

Affected products

• Fortinet FortiSandbox: from 4.0.0, before 4.4.8 (fixed in 4.4.8); from 5.0.0, before 5.0.2 (fixed in 5.0.2)

Published 2026-02-10. Last modified 2026-06-17.