CVE-2026-126165

Name of the Vulnerable Software and Affected Versions FortiMail versions 8.0.0 through 8.0.1 FortiMail versions 7.6.0 through 7.6.6 FortiMail versions 7.4.0 through 7.4.8 FortiMail version 7.2

Description A memory allocation issue occurs when the system processes an excessive size value. This allows a remote unauthenticated attacker to trigger a denial of service by sending a specially crafted attachment via the SMTP protocol.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.