Over 25,000 Fortinet Devices Vulnerable to Attacks via FortiCloud SSO

Over 25,000 Fortinet Devices Vulnerable to Attacks via FortiCloud SSO

First seen 29 Dec 2025, 22:10 UTC •BleepingcomputerScworld •17.9

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More than 25,000 Fortinet devices with FortiCloud SSO enabled are exposed to remote attacks due to a critical authentication bypass vulnerability tracked as CVE-2025-59718. The U.S. has the highest number of affected devices, followed by India, as reported by Shadowserver. Fortinet released patches for the vulnerabilities on December 9, 2025.

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