CVE-2025-46776: Fortinet Fortiextender Firmware

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiExtender 7.6.0 through 7.6.1, FortiExtender 7.4.0 through 7.4.6, FortiExtender 7.2 all versions, FortiExtender 7.0 all versions may allow an authenticated user to execute arbitrary code or commands via crafted CLI commands.

Affected products

• Fortinet Fortiextender Firmware: from 7.0.0, before 7.4.8 (fixed in 7.4.8); from 7.6.0, before 7.6.3 (fixed in 7.6.3)

Published 2025-11-18. Last modified 2026-06-17.