The web service on Nexxt Amp300 ARN02304U8 42.103.1.5095 and 80.103.2.5045 devices allows remote OS command execution by placing &telnetd in the JSON host field to the ping feature of the goform/sysTools component. Authentication is required
https://securityaffairs.com/183183/malware/rondodox-botnet-targets-56-flaws-across-30-device-types-worldwide.html
https://thehackernews.com/2025/01/hackers-exploit-zero-day-in-cnpilot.html
https://www.nexxtsolutions.com/connectivity/search/?q=ARN02304U8
https://packetstormsecurity.com/files/170366/Nexxt-Router-Firmware-42.103.1.5095-Remote-Code-Execution.html
https://cxsecurity.com/issue/WLB-2023010006
http://packetstormsecurity.com/files/170366/Nexxt-Router-Firmware-80.103.2.5045-Remote-Code-Execution.html
http://packetstormsecurity.com/files/170366/Nexxt-Router-Firmware-42.103.1.5095-Remote-Code-Execution.html
Source: Mitre, NVD
Published: 2023-01-06
Updated: 2026-06-17
Base Score: 9
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
Severity: High
Base Score: 8.8
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.64354