CVE-2026-58457

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.

CVSS 4.0

9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

2.9% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-25)

CWE

CWE-78

Published

2026-07-01

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

References

• https://github.com/IEATASICS/m300-repeater-bugs#
• https://www.aliexpress.us/item/3256806767641280.html
• https://www.vulncheck.com/advisories/shenzhen-aitemi-m300-mt02-unauthenticated-os-command-injection-via-protocol-csp

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