Stack Buffer Overflow in Tenda-AX3 Router

CVE-2021-46393

Summary

The Tenda-AX3 router contains a stack buffer overflow vulnerability in the formSetPPTPServer function. An attacker can exploit this flaw by sending a specially crafted HTTP request to the /goform/SetPptpServerCfg endpoint, with the startIp parameter manipulated to overflow the buffer. This allows the potential for remote code execution, posing significant security risks for affected devices. Users are advised to apply updates or take preventive measures to secure their networks.

References