CVE-2023-39240 (rt-ac86u_firmware, rt-ax55_firmware, rt-ax56u_v2_firmware)

It is identified a format string vulnerability in ASUS RT-AX56U V2’s iperf client function API. This vulnerability is caused by lacking validation for a specific value within its set_iperf3_cli.cgi module. An unauthenticated remote attacker can exploit this vulnerability without privilege to perform remote arbitrary code execution, arbitrary system operation or disrupt service.

api arbitrary code asus attacker client code code execution cve disrupt exploit format string function privilege service system unauthenticated validation value vulnerability