CVE-2026-58457CWE-78

Shenzhen Aitemi M300 MT02 Unauthenticated OS Command Injection via protocol.csp

Critical · published July 1, 2026

CVSS v4.0
9.3
EPSS
3%
Percentile
87.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.02939 · 87.0th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-07-01T19:22Z
EPSS history
Timeline
  • 01 JUL 19:22Z
    Shenzhen Aitemi M300 MT02 Unauthenticated OS Command Injection via protocol.csp
    cvelistv5