The Tenda G0 router firmware version 15.11.0.5 has multiple stack overflow vulnerabilities in the formSetDebugCfgr function. These vulnerabilities arise from improper handling of the enable, level, and module parameters, which can be exploited through specially crafted HTTP requests to cause a Denial of Service by crashing the device or disrupting its normal operation. The vulnerability is identified as CWE-121 (Stack-based Buffer Overflow). There is no vendor advisory or patch information available at this time.

Successful exploitation results in Denial of Service (DoS) by causing the device to crash or become unresponsive. There is no indication of confidentiality or integrity impact. The attack can be performed remotely without privileges, but requires user interaction (UI:R). No known exploits are reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, limit exposure of the device management interface to untrusted networks and monitor for suspicious HTTP requests targeting the vulnerable parameters.