CVE-2026-58457 Shenzhen Aitemi M300 MT02 Unauthenticated OS Command Injection via protocol.csp
Network-adjacent attackers can execute arbitrary root-level shell commands on Shenzhen Aitemi M300 Wi-Fi Repeaters via unsanitized input in the web backend.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-58457?
CVE-2026-58457 is a critical command injection vulnerability in Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater, published on 1 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-58457?
How do I fix CVE-2026-58457?
No fix has been published for CVE-2026-58457 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-58457 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58457 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-gfhx-3hfg-x9hv.