Hackers Allegedly Selling Fortinet FortiGate 1-Day Vulnerability on Underground Forums
An unverified underground listing offers a claimed FortiGate SSL VPN RCE exploit for FortiOS 7.2.x/7.4.x amid ongoing exploitation of known Fortinet flaws.
Dark Web Intelligence shared an advertisement for a private '1-day' remote code execution exploit targeting FortiGate SSL VPN appliances on FortiOS 7.2.x and 7.4.x, with a claimed proof-of-concept video but no CVE, firmware builds, or technical details. The listing coincides with confirmed in-the-wild exploitation of CVE-2025-25249, an unauthenticated heap-based buffer overflow patched in January 2026 but exploited since July 2026, and CVE-2024-21762, a critical out-of-bounds write in the FortiOS and FortiProxy SSL VPN component. Fortinet has advised disabling SSL VPN where immediate upgrades are not possible.