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critical advisory

CVE-2026-58457: Shenzhen Aitemi M300 Wi-Fi Repeater Unauthenticated OS Command Injection

An unauthenticated OS command injection vulnerability, CVE-2026-58457, exists in the Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02), allowing network-adjacent attackers to execute arbitrary shell commands and gain full root-level control by injecting unsanitized input into the `smacfilter_conf` handler's GET parameters within the `commuos` web backend.

M300 Wi-Fi Repeater +2 network command-injection vulnerability firmware iot
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