The CERT Coordination Center (CERT/CC) has disclosed detailed information regarding an unpatched security flaw affecting the TOTOLINK EX200 wireless range extender. This critical defect could allow a remote authenticated attacker to gain complete control over the device.
The vulnerability, tracked as CVE-2025-65606, currently lacks a CVSS score. The root cause lies in a deficiency within the firmware-upload error-handling logic. This flaw in the logic could inadvertently trigger the device to initiate specific unintended operations.
Since IoT devices like the EX200 are often used near network gateways, achieving full remote device takeover could severely compromise the overall network security posture. Users are strongly advised to closely monitor official patch information from the manufacturer and implement remediation measures as soon as they become available.
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