CVE-2026-7122 — AI Deep Analysis Summary

🚨 **Essence**: A critical Command Injection flaw in TOTOLINK A8000RU routers. <br>💥 **Consequences**: Attackers can execute arbitrary OS commands remotely.…

🛡️ **Root Cause**: CWE-78 (OS Command Injection). <br>🔍 **Flaw**: The `setUPnPCfg` function in `/cgi-bin/cstecgi.cgi` fails to sanitize the `enable` parameter.…

📦 **Affected Product**: TOTOLINK A8000RU Wireless Router. <br>📅 **Specific Version**: 7.1cu.643_b20200521. <br>⚠️ **Vendor**: Totolink (China Jion Electronics). Only this specific firmware build is confirmed vulnerable.

👑 **Privileges**: Full Remote Code Execution (RCE). <br>📂 **Data Access**: High impact on Confidentiality, Integrity, and Availability (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).…

🔓 **Threshold**: LOW. <br>🚫 **Auth Required**: None (PR:N). <br>🌐 **Access**: Network (AV:N). <br>✅ **User Interaction**: None (UI:N). <br>🎯 **Complexity**: Low (AC:L).…

💻 **Public Exploit**: YES. <br>📂 **Source**: GitHub repository `Litengzheng/vuldb_new2` contains a PoC/Exploit for this specific vulnerability.…

🔍 **Self-Check**: Scan for the specific CGI endpoint `/cgi-bin/cstecgi.cgi`. <br>🧪 **Test**: Attempt to inject commands via the `enable` parameter in the `setUPnPCfg` function.…

🩹 **Official Patch**: The data does not explicitly confirm a released patch date, but the vulnerability was published on 2026-04-27.…

🛑 **No Patch Workaround**: <br>1. **Block Access**: Restrict access to port 80/443 (CGI interface) to trusted IPs only via firewall rules. <br>2.…

🔥 **Urgency**: CRITICAL. <br>📈 **Priority**: P1 (Immediate Action). <br>📉 **Reason**: Unauthenticated RCE with public exploits. The CVSS score is 9.8 (Critical).…