CVE-2026-58457

criticalCVSS 9.8covered by 1 sourcefirst seen 2026-07-01

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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Exploitation outlook

Moderate exploitation risk1.7% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 74% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-58457: Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02) contains an unauthenticated OS comma…nvd · 2026-07-01

External references

NVD record for CVE-2026-58457

CVE.org record

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