This vulnerability affects Tenda CX12L firmware version 16.03.53.12. It is a stack-based buffer overflow triggered by improper handling of the 'page' argument in the fromwebExcptypemanFilter function. An attacker with local network access can exploit this flaw to cause memory corruption, potentially leading to denial of service or code execution. The vulnerability has been publicly disclosed but no official fix or patch has been provided by Tenda. The CVSS 4.0 vector indicates the attack requires local access, low complexity, no user interaction, and results in high impact on confidentiality, integrity, and availability.

Successful exploitation can lead to a stack-based buffer overflow, which may allow an attacker with local network access to execute arbitrary code or cause a denial of service on the affected device. The high CVSS score (8.6) reflects significant potential impact on confidentiality, integrity, and availability of the device and network it supports. However, there are no known exploits in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local network access to trusted users only and monitor for unusual activity. Avoid exposing the device management interface to untrusted networks. Follow vendor channels for updates on patches or official mitigations.