Fortinet warns of critical FortiMail flaw exploited in zero-day attacks

Reported by BleepingComputer (Lawrence Abrams)

Summary by Cyber Security News2 Oct 2026, 00:42 CEST

About this summary. This is a short, independently written summary of an article first published by BleepingComputer. Cyber Security News did not report or verify the underlying story. Read the original: https://www.bleepingcomputer.com/news/security/fortinet-warns-of-critical-fortimail-flaw-exploited-in-zero-day-attacks/

Fortinet warns of critical FortiMail flaw exploited in zero-day attacks — Image: BleepingComputer

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.

Read the full article at BleepingComputer →

Source attribution: headline and facts are from BleepingComputer (bleepingcomputer.com). Summary method: excerpt of the source description. See our source attribution policy.

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