CVE-2026-84389: Fortinet Fortisiem

Low severity, CVSS 3.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A url redirection to untrusted site ('open redirect') vulnerability in Fortinet FortiSIEM 7.5.0 through 7.5.1, FortiSIEM 7.4.1 through 7.4.2 may allow attacker to execute unauthorized code or commands via <insert attack vector here>

Affected products

• Fortinet Fortisiem: from 7.5.0, up to and including 7.5.1; from 7.4.1, up to and including 7.4.2

Published 2026-09-08. Last modified 2026-09-10.