Description
An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions allows a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the FortiLink communication channel between the FortiOS device and FortiSwitch.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Fortinet | FortiOS | 7.4.0 – ≤ 7.4.1, 7.2.0 – ≤ 7.2.6, 7.0.0 – ≤ 7.0.15, 6.4.0 – ≤ 6.4.16 | — |
Advisories 3
- ICSA-24-074-05 Siemens RUGGEDCOM APE1808 CISA ICS & IT advisories · Jan 14, 2026
- SSA-832273 SSA-832273: Multiple Vulnerabilities in Fortigate NGFW Before V7.4.3 on RUGGEDCOM APE1808 Devices Siemens ProductCERT · Jan 13, 2026
- WID-SEC-2024-0343 Fortinet FortiOS: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Feb 11, 2024