CVE-2026-25972: Fortinet Fortisiem

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4 may allow a remote unauthenticated attacker to provide arbitrary data enabling a social engineering attack via spoofed URL parameters.

Affected products

• Fortinet Fortisiem: from 7.3.0, before 7.3.5 (fixed in 7.3.5); version 7.4.0 only

Published 2026-03-10. Last modified 2026-06-17.