Vulnerabilitycritical
Fortinet warns of active FortiCloud SSO bypass affecting updated devices
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-59718 | Critical FortiCloud SSO Authentication Bypass in Fortinet FortiOS and FortiProxy | 9.8 | 68% | KEV | KEV |
| CVE-2025-59719 | Unauthenticated SAML Signature Bypass in Fortinet FortiWeb (FortiCloud SSO) | 9.8 | 29% |
From the original article
2 min read at securityaffairs.comFortinet confirmed attacks are bypassing FortiCloud SSO authentication, affecting even fully patched devices, similar to recent SSO flaws. Fortinet confirmed attacks bypass FortiCloud SSO on fully patched devices. Threat actors automate firewall changes, add users, enable VPNs, and steal configs, in campaigns resembling December 2025 exploits of critical FortiCloud SSO flaws.
By @securityaffairs · securityaffairs.com
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