🛡️ **DEVELOPING — Fortinet FortiMail Critical Flaw Under Active Exploit**
Published Thursday, October 01, 2026 at 05:55 PM PT BLUF: Fortinet has warned of a critical vulnerability in FortiMail that is actively exploited in zero-day attacks. Technical details remain limited; this alert is based on headline notification only. All FortiMail deployments should prepare for immediate patching upon vendor guidance. DETAILS: Fortinet has issued a warning regarding a critical flaw in FortiMail email security appliances The vulnerability is actively exploited in zero-day attacks (in-the-wild exploitation prior to patch availability) No CVE identifier, attack vector, or technical description is available in sourced reporting at this time Patch status and affected version numbers not yet confirmed in available material Timeline of discovery and exploitation window unclear IMPACT: ...