The CERT Coordination Center (CERT/CC) has disclosed critical details regarding an unpatched security flaw impacting the TOTOLINK EX200 wireless range extender. This vulnerability, tracked as CVE-2025-65606, could allow a remote authenticated attacker to gain full control of the device.
The flaw has been characterized as a defect in the firmware-upload error-handling logic, which can inadvertently cause the device to enter a state susceptible to compromise. While the CVSS score is currently unassigned, the potential for a full remote device takeover signifies extreme severity.
In the context of Web3 security, the integrity of underlying infrastructure, especially edge devices like range extenders, is paramount. Compromised network hardware can serve as a potent vector for broader attacks targeting user credentials or decentralized network access.
As of this disclosure, the vulnerability remains unpatched by the vendor. Users of the TOTOLINK EX200 are strongly advised to cease use immediately or implement comprehensive mitigation strategies until an official fix is released.
Source: Unpatched Firmware Flaw Exposes TOTOLINK EX200 to Full Remote Device Takeover
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