The Fortinet SSO Flaw is a vulnerability in Fortinet's Single Sign-On service that attackers are actively exploiting to compromise Fortinet firewalls and obtain administrative access.
Overview
The Fortinet SSO Flaw is a vulnerability in Fortinet's Single Sign-On service that attackers are actively exploiting to compromise Fortinet firewalls and obtain administrative access. Exploitation can grant full control of affected FortiGate devices, elevating attacker capabilities within enterprise networks and posing a high-severity risk to cybersecurity postures.
Related Threat Clusters
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Fortinet SSO Vulnerabilities Exploited for Admin Access on Firewalls
Fortinet's Single Sign-On (SSO) vulnerabilities, CVE-2025-59718 and CVE-2025-59719, are being actively exploited by attackers to gain unauthorized administrative access to FortiGate firewalls. These flaws allow…
4 articles · Updated January 22, 2026
Recent Intelligence Reports
- Fortinet SSO Flaw Actively Exploited to Compromise Firewalls and Gain Admin Access — Cyberpress · January 22, 2026