Fortinet warns of critical FortiMail flaw exploited in zero-day attacks
Executive Summary
Fortinet has issued a warning that a critical vulnerability in its FortiMail email gateway (CVE‑2026‑104286) is actively being exploited in zero‑day attacks. The flaw allows attackers to execute arbitrary code or commands on affected devices, potentially compromising network security. Users are urged to apply the latest security patch and monitor for suspicious activity.
Intelligence Metadata - Source Publisher: Bleeping Computer - Published Date: 2026-10-01T22:42:49+00:00 - Category: threat-intel
Original Description: Fortinet is warning customers of a critical FortiMail vulnerability, tracked as CVE-2026-104286, that is being actively exploited in zero-day attacks to execute unauthorized code or commands on vulnerable devices. [...]
"In all chaos there is a cosmos, in all disorder a secret order."
— Carl Jung