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CVE-2026-58457 is a vulnerability classified as Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), affecting M300 Wi-Fi Repeater. This vulnerability is rated Critical, with a CVSS score of 9.3. Public exploit code or evidence is available for this vulnerability, but that does not confirm exploitation in the wild.
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Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02) contains an unauthenticated OS command injection vulnerability that allows network-adjacent attackers to execute arbitrary shell commands by injecting unsanitized input through the smacfilter_conf handler in the commuos web backend. Attackers can append semicolon-delimited payloads to the name, enable, or mac GET parameters, which are passed without sanitization into sprintf() to build uci shell commands executed via doSystemCmdComlib(), granting full root-level control of the device.
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