Tenda AC9 POST Request fast_setting_internet_set stack-based overflow

{
                    "vendor": "Tenda",
                    "product": "AC9",
                    "versions": [
                        {
                            "version": "15.03.02.13",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "POST Request Handler"
                    ]
                }