CVE-2023-42784: Fortinet FortiWeb

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least verions 7.4.0 through 7.4.6 and 7.2.0 through 7.2.10 and 7.0.0 through 7.0.10 allows attacker to execute unauthorized code or commands via HTTP/S crafted requests.

Affected products

• Fortinet FortiWeb: from 7.0.0, before 7.4.7 (fixed in 7.4.7)

Published 2025-03-11. Last modified 2026-06-17.