CVE-2017-20234 — AI Deep Analysis Summary

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

🚨 **Essence**: Hardcoded strings in auth mechanism allow bypass. 💥 **Consequences**: Unauthenticated access to admin functions & sensitive configs. Total compromise of switch integrity.

Q: Root Cause? (CWE/Flaw)

🛡️ **CWE-798**: Use of Hard-coded Credentials. 🔍 **Flaw**: The login control relies on static, hardcoded strings instead of dynamic verification. Easy to reverse-engineer.

Q: Who is affected? (Versions/Components)

🏭 **Vendor**: Belden. 📦 **Products**: GarrettCom Magnum 6K & Magnum 10K Managed Switches. ⚠️ **Scope**: Modular industrial Ethernet switches.

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

👑 **Privileges**: Full administrative access. 📂 **Data**: Read/Write sensitive switch configurations. 🌐 **Impact**: Complete control over network infrastructure without credentials.

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

📉 **Threshold**: LOW. 🔓 **Auth**: None required (PR:N). 🌍 **Network**: Remote (AV:N). 🎯 **Complexity**: Low (AC:L). Trivial to exploit.

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

📜 **Public Exp**: No specific PoC code listed in data. 📢 **Advisories**: Vendor bulletin (BSECV-2017-08) & Third-party analysis exist. ⚠️ **Risk**: High likelihood of wild exploitation due to simplicity.

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

🔍 **Check**: Scan for Magnum 6K/10K devices. 🧪 **Test**: Attempt login with known hardcoded credentials (if disclosed). 📡 **Scan**: Use vulnerability scanners detecting CWE-798 on industrial protocols.

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

🩹 **Fix**: Yes. 📄 **Source**: Vendor Security Bulletin MNS-6K-10K-GarrettCom-BSECV-2017-08. ✅ **Action**: Apply official patch/update from Belden to remove hardcoded strings.

Q: What if no patch? (Workaround)

🚧 **Workaround**: Restrict network access to management interfaces. 🔒 **Segment**: Isolate switches in DMZ or restricted VLANs. 👁️ **Monitor**: Alert on unauthorized login attempts to these specific models.

Q: Is it urgent? (Priority Suggestion)

🔥 **Priority**: CRITICAL. 📈 **CVSS**: 9.1 (High). ⏳ **Urgency**: Patch immediately. 🏭 **Context**: Industrial control systems are high-value targets. No auth bypass is a game-over scenario.

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**: Hardcoded strings in auth mechanism allow bypass. <br>💥 **Consequences**: Unauthenticated access to admin functions & sensitive configs. Total compromise of switch integrity.

Q2Root Cause? (CWE/Flaw)

🛡️ **CWE-798**: Use of Hard-coded Credentials. <br>🔍 **Flaw**: The login control relies on static, hardcoded strings instead of dynamic verification. Easy to reverse-engineer.

Q3Who is affected? (Versions/Components)

🏭 **Vendor**: Belden. <br>📦 **Products**: GarrettCom Magnum 6K & Magnum 10K Managed Switches. <br>⚠️ **Scope**: Modular industrial Ethernet switches.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Full administrative access. <br>📂 **Data**: Read/Write sensitive switch configurations. <br>🌐 **Impact**: Complete control over network infrastructure without credentials.

Q5Is exploitation threshold high? (Auth/Config)

📉 **Threshold**: LOW. <br>🔓 **Auth**: None required (PR:N). <br>🌍 **Network**: Remote (AV:N). <br>🎯 **Complexity**: Low (AC:L). Trivial to exploit.

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

📜 **Public Exp**: No specific PoC code listed in data. <br>📢 **Advisories**: Vendor bulletin (BSECV-2017-08) & Third-party analysis exist. <br>⚠️ **Risk**: High likelihood of wild exploitation due to simplicity.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for Magnum 6K/10K devices. <br>🧪 **Test**: Attempt login with known hardcoded credentials (if disclosed). <br>📡 **Scan**: Use vulnerability scanners detecting CWE-798 on industrial protocols.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Yes. <br>📄 **Source**: Vendor Security Bulletin MNS-6K-10K-GarrettCom-BSECV-2017-08. <br>✅ **Action**: Apply official patch/update from Belden to remove hardcoded strings.

Q9What if no patch? (Workaround)

🚧 **Workaround**: Restrict network access to management interfaces. <br>🔒 **Segment**: Isolate switches in DMZ or restricted VLANs. <br>👁️ **Monitor**: Alert on unauthorized login attempts to these specific models.

Q10Is it urgent? (Priority Suggestion)

🔥 **Priority**: CRITICAL. <br>📈 **CVSS**: 9.1 (High). <br>⏳ **Urgency**: Patch immediately. <br>🏭 **Context**: Industrial control systems are high-value targets. No auth bypass is a game-over scenario.

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Vulnerability detail Full AI analysis (login) Belden CWE-798