CVE-2025-34147: Shenzhen Aitemi M300 Wi-Fi Repeater OS Command Injection via SSID

Severity: critical (CVSS 9.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-04 · updated 2026-06-17
Weakness: CWE-78

Description

An unauthenticated OS command injection vulnerability exists in the Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02). When configuring the device in Extender mode via its captive portal, the extap2g SSID field is inserted unescaped into a reboot-time shell script. This allows remote attackers within Wi-Fi range to inject arbitrary shell commands that execute as root during device reboot, leading to full system compromise.

Affected products

Shenzhen Aitemi E Commerce Co. Ltd. M300 Wi-Fi Repeater: all versions

References

https://chocapikk.com/posts/2025/when-a-wifi-name-gives-you-root/
https://www.aliexpress.us/item/3256806767641280.html
https://www.vulncheck.com/advisories/shenzhen-aitemi-m300-wifi-repeater-os-command-injection-via-ssid

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