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Fortinet Urges Upgrades After Read-Only Access Breach

4/11/2025

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Summary

Story summary

Attackers have taken advantage of vulnerabilities in Fortinet's FortiGate devices, managing to retain read-only access despite applied patches. By creating a symbolic link between user and root filesystems, they cleverly evaded detection. Fortinet is urging customers to upgrade to specific FortiOS versions to eliminate this threat, while CISA has issued a security alert for additional protective measures.

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Story summary

Attackers have taken advantage of vulnerabilities in Fortinet's FortiGate devices, managing to retain read-only access despite applied patches. By creating a symbolic link between user and root filesystems, they cleverly evaded detection. Fortinet is urging customers to upgrade to specific FortiOS versions to eliminate this threat, while CISA has issued a security alert for additional protective measures.