CVE-2026-6114 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: OS Command Injection in TOTOLINK A7100RU. 📉 **Consequences**: Attackers can execute arbitrary system commands, leading to full device compromise, data theft, and network disruption.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-78 (OS Command Injection). 🐛 **Flaw**: Improper handling of the `proto` parameter in the `setNetworkCfg` function within `/cgi-bin/cstecgi.cgi`.

Q: Who is affected? (Versions/Components)

📦 **Affected Product**: TOTOLINK A7100RU Wireless Router. 📅 **Vulnerable Version**: 7.4cu.2313_b20191024. 🏢 **Vendor**: Totolink (China Jixiong Electronics).

Q: What can hackers do? (Privileges/Data)

💀 **Attacker Power**: Full OS command execution. 🔓 **Privileges**: Likely root/system level via CGI handler. 📂 **Data Impact**: High confidentiality & integrity loss; complete system control.

Q: Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. 🌐 **Access**: Network Accessible (AV:N). 🔑 **Auth**: None Required (PR:N). 🖱️ **UI**: None Required (UI:N). Easy to exploit remotely.

Q: Is there a public Exp? (PoC/Wild Exploitation)

🔍 **Public Exp**: Yes. 📂 **Source**: GitHub PoC available (Litengzheng/vuldb_new). 📝 **Tags**: Exploit code is publicly accessible for testing.

Q: How to self-check? (Features/Scanning)

🔎 **Check Method**: Scan for `/cgi-bin/cstecgi.cgi`. 🧪 **Test**: Inject payloads into the `proto` parameter of `setNetworkCfg`. 📡 **Tool**: Use automated vulnerability scanners targeting Totolink CGI endpoints.

Q: Is it fixed officially? (Patch/Mitigation)

🛠️ **Official Fix**: Not explicitly detailed in data. 📢 **Status**: Vendor page linked, but no specific patch version mentioned in the provided JSON. Assume unpatched until verified.

Q: What if no patch? (Workaround)

🚧 **Workaround**: Block external access to port 80/443 if possible. 🚫 **Restrict**: Disable remote management features. 🛑 **Filter**: Input validation on `proto` parameter if source code access is available.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. 🚨 **Priority**: Immediate action required. CVSS Score is High (9.8 implied by vector). Remote, unauthenticated, full control risk.

Updated May 06, 2026 CVSS 9.8 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: OS Command Injection in TOTOLINK A7100RU. 📉 **Consequences**: Attackers can execute arbitrary system commands, leading to full device compromise, data theft, and network disruption.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-78 (OS Command Injection). 🐛 **Flaw**: Improper handling of the `proto` parameter in the `setNetworkCfg` function within `/cgi-bin/cstecgi.cgi`.

Q3Who is affected? (Versions/Components)

📦 **Affected Product**: TOTOLINK A7100RU Wireless Router. 📅 **Vulnerable Version**: 7.4cu.2313_b20191024. 🏢 **Vendor**: Totolink (China Jixiong Electronics).

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Power**: Full OS command execution. 🔓 **Privileges**: Likely root/system level via CGI handler. 📂 **Data Impact**: High confidentiality & integrity loss; complete system control.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. 🌐 **Access**: Network Accessible (AV:N). 🔑 **Auth**: None Required (PR:N). 🖱️ **UI**: None Required (UI:N). Easy to exploit remotely.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🔍 **Public Exp**: Yes. 📂 **Source**: GitHub PoC available (Litengzheng/vuldb_new). 📝 **Tags**: Exploit code is publicly accessible for testing.

Q7How to self-check? (Features/Scanning)

🔎 **Check Method**: Scan for `/cgi-bin/cstecgi.cgi`. 🧪 **Test**: Inject payloads into the `proto` parameter of `setNetworkCfg`. 📡 **Tool**: Use automated vulnerability scanners targeting Totolink CGI endpoints.

Q8Is it fixed officially? (Patch/Mitigation)

🛠️ **Official Fix**: Not explicitly detailed in data. 📢 **Status**: Vendor page linked, but no specific patch version mentioned in the provided JSON. Assume unpatched until verified.

Q9What if no patch? (Workaround)

🚧 **Workaround**: Block external access to port 80/443 if possible. 🚫 **Restrict**: Disable remote management features. 🛑 **Filter**: Input validation on `proto` parameter if source code access is available.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. 🚨 **Priority**: Immediate action required. CVSS Score is High (9.8 implied by vector). Remote, unauthenticated, full control risk.

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Vulnerability detail Full AI analysis (login) Totolink CWE-78