On May 13, 2025, FortiGuard Labs published an advisory detailing CVE-2025-32756, which affects a variety of Fortinet products:

FortiCamera
FortiMail
FortiNDR
FortiRecorder
FortiVoice
In their advisory, FortiGuard Labs states that Fortinet has observed this issue being exploited in the wild. The next day, May 14, the vulnerability was added to the CISA KEV catalog.

The vulnerability is described in the advisory as a stack-based buffer overflow in the administrative API that can lead to unauthenticated remote code execution. Given that it’s being exploited in the wild, we figured we’d take a closer look. If you’d rather run the test instead of reading this write-up, coverage is already available in NodeZero.