CVE-2025-2620 — AI Deep Analysis Summary

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

🚨 **Essence**: Critical Stack Buffer Overflow in D-Link DAP-1620. 💥 **Consequences**: Remote Code Execution (RCE) & Denial of Service (DoS). Attackers can crash the web server or take full control.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-121 (Stack-based Buffer Overflow). 🔍 **Flaw**: The `mod_graph_auth_uri_handler` component fails to properly validate input length, allowing stack corruption.

Q: Who is affected? (Versions/Components)

📦 **Affected**: D-Link DAP-1620 Wireless Range Extender. 📌 **Version**: Specifically **Firmware 1.03**. Check your device version immediately!

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

👑 **Privileges**: Unauthenticated Remote Access. 📂 **Data**: Full system control. Attackers can execute arbitrary commands, steal data, or disrupt network services without any login.

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

⚡ **Threshold**: LOW. 🔓 **Auth**: None required. 🌐 **Config**: Network-accessible. Any attacker on the network can trigger this via the web interface.

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

💣 **Public Exploit**: YES. 🔗 **PoC Available**: GitHub repo `CVE-2025-2620-poc` by Otsmane-Ahmed. ⚠️ **Status**: Active exploitation risk is high due to easy-to-use PoC.

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

🔍 **Self-Check**: 1. Verify firmware is **1.03**. 2. Scan for open HTTP ports on the device. 3. Use vulnerability scanners detecting stack overflows in D-Link auth handlers.

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

🩹 **Official Fix**: Data implies vulnerability exists in 1.03. 🔄 **Action**: Check D-Link support for firmware updates >1.03. If no patch, treat as critical risk.

Q: What if no patch? (Workaround)

🛑 **No Patch?**: 1. **Isolate** the device from the internet. 2. Disable remote management. 3. Restrict access to trusted LAN only. 4. Monitor logs for abnormal web requests.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL (CVSS: 9.8). 🚀 **Priority**: Patch IMMEDIATELY. If unpatchable, isolate the device. This is a high-severity RCE with public exploits.

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**: Critical Stack Buffer Overflow in D-Link DAP-1620. <br>💥 **Consequences**: Remote Code Execution (RCE) & Denial of Service (DoS). Attackers can crash the web server or take full control.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-121 (Stack-based Buffer Overflow). <br>🔍 **Flaw**: The `mod_graph_auth_uri_handler` component fails to properly validate input length, allowing stack corruption.

Q3Who is affected? (Versions/Components)

📦 **Affected**: D-Link DAP-1620 Wireless Range Extender. <br>📌 **Version**: Specifically **Firmware 1.03**. Check your device version immediately!

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Unauthenticated Remote Access. <br>📂 **Data**: Full system control. Attackers can execute arbitrary commands, steal data, or disrupt network services without any login.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. <br>🔓 **Auth**: None required. <br>🌐 **Config**: Network-accessible. Any attacker on the network can trigger this via the web interface.

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

💣 **Public Exploit**: YES. <br>🔗 **PoC Available**: GitHub repo `CVE-2025-2620-poc` by Otsmane-Ahmed. <br>⚠️ **Status**: Active exploitation risk is high due to easy-to-use PoC.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: 1. Verify firmware is **1.03**. 2. Scan for open HTTP ports on the device. 3. Use vulnerability scanners detecting stack overflows in D-Link auth handlers.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: Data implies vulnerability exists in 1.03. <br>🔄 **Action**: Check D-Link support for firmware updates >1.03. If no patch, treat as critical risk.

Q9What if no patch? (Workaround)

🛑 **No Patch?**: 1. **Isolate** the device from the internet. 2. Disable remote management. 3. Restrict access to trusted LAN only. 4. Monitor logs for abnormal web requests.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL (CVSS: 9.8). <br>🚀 **Priority**: Patch IMMEDIATELY. If unpatchable, isolate the device. This is a high-severity RCE with public exploits.

Continue exploring

Vulnerability detail Full AI analysis (login) D-Link CWE-121