
🚨 New Fortinet vulnerability being exploited as an 0-day CVE-2026-35616 - FortiClient EMS pre-authentication API access bypass - CVSS 9.1 Critical After observing in-the-wild exploitation of this vulnerability earlier this week, Defused reported it to Fortinet under responsible disclosure. Fortinet has released an emergency hotfix - plus a scheduled patch - for FortiClient EMS 7.4.5 and 7.4.6. The vulnerability allows an unauthenticated attacker to bypass API authentication and authorization entirely, unauthorized code or commands via crafted requests. This discovery was made through our upcoming Radar feature launching next week 😇 Advisory: fortiguard.com/psirt/FG-IR-26… Track exploitation of this and other Fortinet vulns in real time and get updates on the new Defused Radar 👉 console.defusedcyber.com/signup Credit also to @heckintosh_ for independently discovering this vulnerability 💪


















