RCE in Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/IEATASICS/m300-repeater-bugs (technical-description, exploit)
- www.aliexpress.us/item/3256806767641280.html (product)
- www.vulncheck.com/advisories/shenzhen-aitemi-m300-mt02-unauthenticated-os-comma… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-58457?
- CVE-2026-58457 is a critical-severity vulnerability in Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-07-01.
- How severe is CVE-2026-58457?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-58457 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.