CVE-2026-6026 — AI Deep Analysis Summary

🚨 **Essence**: OS Command Injection in TOTOLINK A7100RU. <br>💥 **Consequences**: Attackers can execute arbitrary system commands. This leads to total device compromise, data theft, and network disruption.

🛡️ **Root Cause**: CWE-78 (OS Command Injection). <br>🔍 **Flaw**: Improper handling of the `enable` parameter in `/cgi-bin/cstecgi.cgi`. User input is not sanitized before being passed to the OS shell.

📦 **Affected Product**: TOTOLINK A7100RU Wireless Router. <br>📅 **Specific Version**: 7.4cu.2313_b20191024. <br>⚠️ **Vendor**: Totolink (China Jicong Electronics).

👑 **Privileges**: Full System Control. <br>📂 **Data**: High Impact (C:H, I:H, A:H). Attackers can read sensitive configs, modify settings, and crash the device. CVSS Score indicates Critical severity.

🔓 **Threshold**: LOW. <br>🌐 **Access**: Network Accessible (AV:N). <br>🔑 **Auth**: None Required (PR:N). <br>👀 **UI**: None Required (UI:N). <br>📉 **Complexity**: Low (AC:L). Easy to exploit remotely.

📜 **Public Exp**: Yes. <br>🔗 **Source**: GitHub repository (Litengzheng/vuldb_new) contains exploit details. <br>🔍 **VDB**: VDB-356602 provides technical description and IOCs.

🔍 **Self-Check**: Scan for the specific CGI endpoint `/cgi-bin/cstecgi.cgi`. <br>📡 **Target**: Look for traffic involving the `enable` parameter in POST requests to this endpoint on port 80/443.…

🩹 **Official Patch**: Data does not explicitly list a vendor patch link. <br>📝 **Reference**: Only vendor homepage (totolink.net) and third-party advisories are listed.…

🚧 **Workaround**: Block external access to the router's management interface (WAN side). <br>🔒 **Restrict**: Disable remote management features.…

🔥 **Urgency**: CRITICAL. <br>📈 **Priority**: Immediate Action Required. <br>⚡ **Reason**: High CVSS score (9.8+ implied by H/H/H), no auth required, and public exploits exist. Isolate affected devices immediately.