Buffer over-read in FGFM

Summary

A buffer over-read vulnerability [CWE-126] in FortiOS may allow a remote unauthenticated attacker to crash the FGFM daemon via a specially crafted request, under rare conditions that are outside of the attacker's control.

Version Affected Solution
FortiOS 7.6 Not affected Not Applicable
FortiOS 7.4 7.4.0 through 7.4.3 Upgrade to 7.4.4 or above
FortiOS 7.2 7.2.0 through 7.2.7 Upgrade to 7.2.8 or above
FortiOS 7.0 7.0.0 through 7.0.14 Upgrade to 7.0.15 or above
FortiOS 6.4 6.4 all versions Migrate to a fixed release
Follow the recommended upgrade path using our tool at: https://docs.fortinet.com/upgrade-tool

Acknowledgement

Discovered internally by Fortinet R&D

Timeline

2025-05-13: Initial publication