Key Information Summary Vulnerability Overview Vulnerability Type: Stack Overflow Affected Product and Version: - Device: TOTOLink A3300R - Firmware Version: V17.0.0cu.557_B20221024 Manufacturer Website: https://www.totolink.net/ Firmware Download Link: https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/241/dgs/36.html Vulnerability Details Root Cause: Lack of input validation, insufficient sanitization, and inadequate length checking. Specific Issue: The function processes the parameter without enforcing length restrictions, leading to a stack overflow. Vulnerability Code Snippet POC (Proof of Concept) 1. Store opmode_custom 2. Trigger the Vulnerability 3. Result - Connection fails, displaying error message. ``` This information reveals a stack overflow vulnerability present in the firmware of the TOTOLink A3300R device, along with how to trigger it using specific POST request parameters.