Risky Bulletin Newsletter
January 23, 2026
Risky Bulletin: Improperly patched bug exploited again in Fortinet firewalls
Presented by
News Editor
Threat actors have mounted a new wave of attacks against Fortinet's FortiGate firewalls using a vulnerability that was improperly patched last month.
Security firm Arctic Wolf says hackers are bypassing Single Sign-On (SSO) authentication using generic usernames, creating their own admin account for future access, and stealing the device's current configuration file.
Since the attacks were first being reported online, Fortinet has confirmed in private emails to some customers that the attackers have found a new way to exploit CVE-2025-59718.