High · published December 30, 2025
🚨 Remote exploitation is possible through a heap-based buffer overflow in Tenda M3 devices! This vulnerability is like leaving your front door wide open while expecting no one to wander in. 🔥 Think of it as a delivery driver taking a wrong turn into your garage instead of just dropping off your package outside. Once inside, they have full access to all your belongings, just like an attacker could manipulate the `qvlan_truck_port` argument and wreak havoc on your device. An attacker could remotely exploit this flaw, gaining unauthorized access to your device and potentially causing chaos in your network. With full control, they could manipulate settings, intercept communications, or even launch further attacks on other devices connected to your network. This could lead to an absolute disaster for your security!
Think of it as a delivery driver taking a wrong turn into your garage instead of just dropping off your package outside. Once inside, they have full access to all your belongings, just like an attacker could manipulate the `qvlan_truck_port` argument and wreak havoc on your device. The vulnerability arises from a heap-based buffer overflow in the `formSetVlanPolicy` function of Tenda M3's `/goform/setVlanPolicyData` endpoint, which does not properly validate the input for the `qvlan_truck_port` parameter, allowing attackers to craft inputs that overflow the buffer and execute arbitrary code.
An attacker could remotely exploit this flaw, gaining unauthorized access to your device and potentially causing chaos in your network. With full control, they could manipulate settings, intercept communications, or even launch further attacks on other devices connected to your network. This could lead to an absolute disaster for your security! Update your Tenda M3 firmware to the latest version, specifically to version 1.0.0.14 or later, to patch this vulnerability. Additionally, consider implementing network segmentation and monitoring to detect any unusual activity. Don't leave your door wide open! You’ve got this! Stay vigilant, follow these steps, and you’ll have your network secured in no time! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| tenda/m3_firmware | all versions | — |