Critical · published May 7, 2021
CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.7th percentile for exploit probability.
🚨 A stack buffer overflow on Tenda AC11 routers is like leaving the front door wide open — a crafted request could let attackers execute any code they want! 🔥 Think of it as a hotel where anyone can slip a key into the lock to access a suite without any verification. That’s what happens here when the router blindly accepts a crafted POST request without checking the contents. This vulnerability could allow an attacker to run any code on your router, potentially giving them control over your network. They could intercept your traffic, steal sensitive data, or even launch attacks on other devices connected to your network. The consequences are absolutely devastating for both your security and privacy.
Think of it as a hotel where anyone can slip a key into the lock to access a suite without any verification. That’s what happens here when the router blindly accepts a crafted POST request without checking the contents. The flaw exists in the '/goform/setmac' endpoint of Tenda AC11 devices with certain firmware versions. A stack buffer overflow allows attackers to exploit this endpoint by sending a specially crafted POST request, leading to arbitrary code execution.
This vulnerability could allow an attacker to run any code on your router, potentially giving them control over your network. They could intercept your traffic, steal sensitive data, or even launch attacks on other devices connected to your network. The consequences are absolutely devastating for both your security and privacy. To protect your devices, immediately update the firmware to the latest version available on Tenda's website. Ensure that your network settings are secure, and consider changing any default passwords. Regularly check for firmware updates to stay protected! You've got this! Follow these steps and you’ll have your network secured in no time. 🛡️