<ul><li>Fortinet warns attackers can keep read-only access to FortiGate devices even after the original vulnerability is patched.</li><li>The attackers exploited known FortiGate flaws to gain persistent read-only access via a symlink in SSL-VPN language folders.</li><li>The vulnerability allowed threat actors to maintain read-only access to files on the device's file system.</li><li>Fortinet released mitigations and urged customers to patch their devices to prevent further attacks.</li></ul>

Symbolic Link trick lets attackers bypass FortiGate patches, Fortinet warns

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