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Tracked as CVE-2026-24858, the bug allows attackers to log into devices registered to other FortiCloud accounts.
The post Fortinet Patches Exploited FortiCloud SSO Authentication Bypass appeared first on SecurityWeek.
Fortinet has begun releasing FortiOS versions that fix CVE-2026-24858, a critical zero-day vulnerability that allowed attackers to log into targeted organizations’ FortiGate firewalls. “This vulnerability was found being exploited in the wi…
Fortinet 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. Arctic Wolf researchers reported […]
Similar to recent FortiCloud single sign-on (SSO) login vulnerabilities, the attacks bypass authentication.
The post Fortinet Confirms FortiCloud SSO Exploitation Against Patched Devices appeared first on SecurityWeek.
Hackers bypass the FortiCloud SSO login authentication to create new accounts and change device configurations.
The post New Wave of Attacks Targeting FortiGate Firewalls appeared first on SecurityWeek.
Arctic Wolf warned of a new wave of automated attacks making unauthorized firewall configuration changes on Fortinet FortiGate devices. Arctic Wolf researchers reported a new automated attack cluster observed since January 15, 2026, targeting FortiGate devices. Attackers created generic accounts for persistence, enabled VPN access, and exfiltrated firewall configurations. The activity resembles a December 2025 […]
CVE-2025-59718, a critical authentication bypass flaw that attackers exploited in December 2025 to compromise FortiGate appliances, appears to persist in newer, purportedly fixed releases of the underlying FortiOS. According to Fortinet, CVE-2025-59718…
A critical vulnerability (CVE-2025-64155) in Fortinet’s FortiSIEM security platform has now been accompanied by publicly released proof-of-concept (PoC) exploit code, raising the urgency for organizations to patch immediately. About CVE-2025-64155 CVE-…
Exploitable without authentication, the two security defects could lead to configuration leak and code execution.
The post Fortinet Patches Critical Vulnerabilities in FortiFone, FortiSIEM appeared first on SecurityWeek.
Tracked as CVE-2020-12812, the exploited FortiOS flaw allows threat actors to bypass two-factor authentication.
The post Fortinet Warns of New Attacks Exploiting Old Vulnerability appeared first on SecurityWeek.