CVE-2024-39803 — AI Deep Analysis Summary

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

🚨 **Essence**: Buffer Overflow in WAVLINK AC3000 Router. 💥 **Consequences**: Full system compromise. High CVSS score means Critical impact on Confidentiality, Integrity, and Availability.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-120 (Buffer Copy without Checking Size of Input). ⚠️ **Flaw**: Multiple buffer overflow vulnerabilities exist in the firmware logic.

Q: Who is affected? (Versions/Components)

📦 **Affected**: WAVLINK AC3000 Router. 🔢 **Version**: M33A8.V5030.210505. 🏢 **Vendor**: Wavlink (China).

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

🕵️ **Hacker Actions**: Remote Code Execution (RCE). 🔓 **Privileges**: Root/Admin access likely. 📊 **Data**: Full read/write access to device data and network.

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

🔑 **Threshold**: Medium. 🔒 **Auth**: PR:H (Privileges Required: High). 🌐 **Access**: AV:N (Network). Requires valid credentials to exploit.

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

📜 **Public Exp**: No PoC listed in data. 🔍 **Source**: Talos Intelligence report (TALOS-2024-2049). ⚠️ **Status**: Theoretical risk until PoC appears.

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

🔍 **Self-Check**: Scan for WAVLINK AC3000 devices. 🔎 **Version**: Verify firmware is M33A8.V5030.210505. 📡 **Port**: Check for open management ports.

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

🩹 **Patch**: Not explicitly mentioned in data. 📅 **Published**: 2025-01-14. 👉 **Action**: Check Wavlink official site for updates immediately.

Q: What if no patch? (Workaround)

🛑 **Workaround**: Disable remote management. 🔒 **Network**: Isolate device on VLAN. 🚫 **Access**: Restrict admin access to local network only.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: HIGH. 📈 **CVSS**: 9.8 (Critical). ⏳ **Priority**: Patch immediately or isolate. Do not ignore.

Updated May 06, 2026 CVSS 9.1 · 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**: Buffer Overflow in WAVLINK AC3000 Router. <br>💥 **Consequences**: Full system compromise. High CVSS score means Critical impact on Confidentiality, Integrity, and Availability.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-120 (Buffer Copy without Checking Size of Input). <br>⚠️ **Flaw**: Multiple buffer overflow vulnerabilities exist in the firmware logic.

Q3Who is affected? (Versions/Components)

📦 **Affected**: WAVLINK AC3000 Router. <br>🔢 **Version**: M33A8.V5030.210505. <br>🏢 **Vendor**: Wavlink (China).

Q4What can hackers do? (Privileges/Data)

🕵️ **Hacker Actions**: Remote Code Execution (RCE). <br>🔓 **Privileges**: Root/Admin access likely. <br>📊 **Data**: Full read/write access to device data and network.

Q5Is exploitation threshold high? (Auth/Config)

🔑 **Threshold**: Medium. <br>🔒 **Auth**: PR:H (Privileges Required: High). <br>🌐 **Access**: AV:N (Network). Requires valid credentials to exploit.

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

📜 **Public Exp**: No PoC listed in data. <br>🔍 **Source**: Talos Intelligence report (TALOS-2024-2049). <br>⚠️ **Status**: Theoretical risk until PoC appears.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for WAVLINK AC3000 devices. <br>🔎 **Version**: Verify firmware is M33A8.V5030.210505. <br>📡 **Port**: Check for open management ports.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Patch**: Not explicitly mentioned in data. <br>📅 **Published**: 2025-01-14. <br>👉 **Action**: Check Wavlink official site for updates immediately.

Q9What if no patch? (Workaround)

🛑 **Workaround**: Disable remote management. <br>🔒 **Network**: Isolate device on VLAN. <br>🚫 **Access**: Restrict admin access to local network only.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: HIGH. <br>📈 **CVSS**: 9.8 (Critical). <br>⏳ **Priority**: Patch immediately or isolate. Do not ignore.

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Vulnerability detail Full AI analysis (login) Wavlink CWE-120