Description
A improper certificate validation vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.13, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the SSLVPN web portal and the backend destination website.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Fortinet | FortiOS | 7.6.0 – ≤ 7.6.4, 7.4.0 – ≤ 7.4.9, 7.2.0 – ≤ 7.2.13, 7.0.0 – ≤ 7.0.19, 6.4.0 – ≤ 6.4.16 | — |
Advisories 2
- NCSC-2026-0489 Kwetsbaarheden verholpen in Fortinet FortiOS NCSC-NL (Netherlands) · Nov 12, 2026
- WID-SEC-2026-4489 Fortinet Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026