This vulnerability in Tenda G0 up to version 20260625 involves a stack-based buffer overflow triggered by manipulating the portMirrorMirroredPorts argument in the formSetPortMirror function of the /goform/module endpoint in the httpd Web Management Interface. The flaw allows remote attackers to overflow the stack, potentially leading to code execution or denial of service. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity. Although exploit code is publicly available, no official vendor patch or mitigation guidance has been provided as of the publication date.

Successful exploitation can lead to stack-based buffer overflow, which may allow remote attackers to execute arbitrary code or cause denial of service on the affected device. The vulnerability affects the device's web management interface, which is typically accessible remotely, increasing the risk of exploitation.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Until a patch is available, restricting access to the web management interface and monitoring for exploitation attempts may reduce risk.