The mqlink.elf is service component in Ruijie RG-EW300N with firmware ReyeeOS 1.300.1422 is vulnerable to Remote Code Execution via a modified MQTT broker message.
The mqlink.elf service handles communication with an MQTT broker on the Ruijie RG-EW300N device. An attacker can send a modified MQTT message that is improperly processed by this service, leading to the execution of arbitrary code (CWE-94 — improper control of code generation). The attack is possible remotely over the network without the need for privileges or prior access to the device.
An attacker can gain full control of the device through remote execution of arbitrary code, which threatens the confidentiality, integrity, and availability of the system.
Patches available from the manufacturer should be applied in accordance with the references. Additionally, it is recommended to restrict network access to the MQTT port on the device and isolate the device in a dedicated network segment behind a firewall until the update is applied.
Ruijie RG-EW300N with ReyeeOS firmware version 1.300.1422
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HRuijie Reyee Os
OSRuijie1.300.1422Ruijie Rg Ew300n
HWRuijieall versions
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