CVE-2026-5997 — AI Deep Analysis Summary

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

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

📦 **Affected Product**: TOTOLINK A7100RU Router. <br>📌 **Specific Version**: 7.4cu.2313_b20191024. <br>🏢 **Vendor**: TOTOLINK (China Jion Electronics).

👑 **Privileges**: High. The vulnerability allows **full OS command execution**. <br>📂 **Data Impact**: High. Attackers can read sensitive configs, steal credentials, and potentially pivot to other network devices.…

⚡ **Threshold**: **LOW**. <br>🔓 **Auth**: No authentication required (`PR:N`). <br>🌐 **Access**: Network accessible (`AV:N`). <br>🎯 **Complexity**: Low (`AC:L`). Easy to exploit remotely.

📜 **Public Exploit**: Yes. <br>🔗 **Source**: GitHub repository `Litengzheng/vuldb_new` contains a PoC/Exploit. <br>⚠️ **Status**: Active exploitation risk exists as proof-of-concept code is available.

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

🩹 **Official Fix**: Data does not explicitly confirm a patched version release date. <br>📅 **Published**: 2026-04-10. <br>⚠️ **Action**: Check TOTOLINK’s official website for firmware updates immediately.…

🚧 **Workaround**: <br>1. **Isolate**: Place the router in a restricted VLAN. <br>2. **Block**: Restrict access to `/cgi-bin/cstecgi.cgi` via firewall rules. <br>3.…

🔥 **Urgency**: **CRITICAL**. <br>🚨 **Priority**: Immediate action required. <br>📉 **Risk**: High CVSS (H/I/H). No auth needed. Public exploit exists. Patch or mitigate NOW to prevent total network compromise.