CVE-2020-10987 — AI Deep Analysis Summary

🚨 **Essence**: Remote Command Execution (RCE) in Tenda AC15/AC1900 routers. 📉 **Consequences**: Attackers gain full control over the device, potentially compromising the entire local network.

🛡️ **Root Cause**: Improper input validation in the `goform/setUsbUnload` endpoint. 💥 **Flaw**: The `deviceName` POST parameter is not sanitized, allowing injection of arbitrary system commands.

📦 **Affected**: Tenda AC15 & AC1900 routers. 📅 **Version**: Specifically **15.03.05.19**. ⚠️ **Note**: Other versions may be vulnerable, but this is the confirmed vector.

👑 **Privileges**: Arbitrary System Command Execution. 🕵️ **Impact**: Remote attackers can run commands with the privileges of the web server process (often root on embedded devices).

🔓 **Threshold**: **LOW**. 🌐 **Auth**: No authentication required. 📡 **Access**: The vulnerable endpoint is reachable remotely via HTTP POST requests.

💻 **Exploit**: **YES**. 📂 **PoC**: Publicly available on GitHub (e.g., `nuclei-templates`, `Tenda-Router-VR-and-Exploit`). 🔄 **Status**: Active exploitation techniques are documented.

🔍 **Check**: Scan for the `/goform/setUsbUnload` endpoint. 📤 **Test**: Send a POST request with a malicious `deviceName` payload. 🛠️ **Tool**: Use Nuclei templates or custom scripts to verify vulnerability.

🔄 **Fix**: Official patches may exist. 📥 **Action**: Check Tenda's official support site for firmware updates newer than 15.03.05.19. 📝 **Ref**: Security Evaluators blog details the vulnerability discovery.

🚧 **Workaround**: Block external access to the router's web interface. 🚫 **Network**: Disable remote management features. 🛑 **Filter**: Use firewall rules to prevent unauthorized POST requests to `/goform/` endpoints.

🔥 **Urgency**: **HIGH**. 🚨 **Reason**: Unauthenticated RCE is critical. 🛡️ **Advice**: Patch immediately or isolate the device. Do not expose router admin ports to the internet.