CVE-2022-2487 — AI Deep Analysis Summary

🚨 **Essence**: OS Command Injection in WAVLINK routers. 📉 **Consequences**: Attackers can execute arbitrary commands, steal data, modify system files, or take full control of the device.…

🛡️ **Root Cause**: CWE-78 (OS Command Injection). 💥 **Flaw**: The `/cgi-bin/nightled.cgi` script fails to sanitize the `start_hour` parameter. Malicious input is passed directly to the OS shell.

📦 **Affected**: WAVLINK WN535K2 and WN535K3 Wireless Routers. 🏭 **Vendor**: WAVLINK (China). ⚠️ **Scope**: Specifically targets the `nightled.cgi` component in these models.

💀 **Capabilities**: Full system control. 📂 **Data**: Access to sensitive info. 🔓 **Privileges**: Execute malware, modify data, gain root/admin access without credentials. It’s a total compromise.

🔑 **Auth Required**: Yes. PR:L (Privileges Required: Low). 🌐 **Access**: Network Adjacent (AV:A). ⚠️ **Threshold**: Moderate. You need local network access and basic credentials, but no user interaction (UI:N) is needed.

🔍 **Public Exp**: Yes. 📜 **PoC**: Available via Nuclei templates (projectdiscovery). 🌍 **Status**: Known vulnerability with documented exploitation paths. Not zero-day anymore.

🔎 **Self-Check**: Scan for `/cgi-bin/nightled.cgi`. 📡 **Tool**: Use Nuclei or similar scanners with CVE-2022-2487 templates. 🧪 **Test**: Manipulate `start_hour` parameter to see if shell commands execute.

🛠️ **Patch**: Check WAVLINK official support for firmware updates. 📅 **Published**: July 20, 2022. ⏳ **Status**: Vendor should have released a fix by now. Verify your router’s firmware version.

🚧 **Workaround**: Disable remote management if possible. 🚫 **Network**: Isolate IoT devices on a separate VLAN. 🛑 **Access Control**: Restrict access to the router’s admin interface to trusted IPs only.

🔥 **Priority**: HIGH. 📈 **CVSS**: 9.8 (Critical). 🚨 **Action**: Patch immediately or isolate. The impact is High (C:H, I:H, A:H). Don’t ignore this!