A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiMail version 6.4.0, version 6.2.0 through 6.2.4 and before 6.0.9 allows a remote unauthenticated attacker to partially exhaust CPU and memory via sending numerous HTTP requests to the login form.

A exposure of sensitive information to an unauthorized actor in Fortinet FortiMail versions 6.0.9 and below, FortiMail versions 6.2.4 and below FortiMail versions 6.4.1 and 6.4.0 allows attacker to obtain potentially sensitive software-version information via client-side resources inspection.

A buffer overflow [CWE-121] in the TFTP client library of FortiOS before 6.4.7 and FortiOS 7.0.0 through 7.0.2, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.