CVE-2026-58457

Critical

Description

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.

SeverityCritical

CVSS9.8

Exploit probability87. percentile2.9%

ProductM300 Wi-Fi Repeater

PublishedJul 1, 2026

First seenJul 1, 2026

Weakness typeCWE-78OS command injection

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater	No range specified	—

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