CVE-2024-20481 — AI Deep Analysis Summary

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

🚨 **Essence**: A Denial of Service (DoS) vulnerability in Cisco FTD & ASA. 💥 **Consequences**: Attackers can crash or freeze the device, causing network downtime. Service availability is compromised.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-772**: Missing Release of Resource after Effective Lifetime. 🔍 **Flaw**: The system fails to properly release resources after handling specific requests, leading to exhaustion.

Q: Who is affected? (Versions/Components)

🏢 **Affected Products**: 1. Cisco Firepower Threat Defense (FTD) 2. Cisco Adaptive Security Appliance (ASA) Software 🌍 **Vendor**: Cisco Systems (USA).

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

💀 **Attacker Action**: Trigger a **Denial of Service**. 🚫 **Impact**: High Availability (A:L) impact. No data theft (C:N) or modification (I:N), but service stops working.

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

⚡ **Exploitation Threshold**: **LOW**. 📊 **CVSS**: AV:N (Network), AC:L (Low Complexity), PR:N (No Privileges), UI:N (No User Interaction). 🎯 **Easy to exploit** remotely without login.

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

📦 **Public Exploit**: **No**. 🚫 **PoC**: None listed in data. 🌐 **Wild Exploit**: Unconfirmed. Currently theoretical risk based on CVSS score.

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

🔍 **Self-Check**: 1. Verify if your device runs **Cisco ASA** or **FTD**. 2. Check version against Cisco Security Advisory. 3. Monitor for sudden service drops or resource exhaustion logs.

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

🩹 **Official Fix**: **Yes**. 📢 **Action**: Cisco released a Security Advisory (cisco-sa-asaftd-bf-dos-vDZhLqrW). ⬇️ **Step**: Update to the patched version immediately.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. ⚠️ **Priority**: Patch ASAP. 📉 **Reason**: Remote, unauthenticated, low complexity. Critical infrastructure (Firewalls) at risk of outage.

Updated May 06, 2026 CVSS 5.8 · Medium

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**: A Denial of Service (DoS) vulnerability in Cisco FTD & ASA. <br>💥 **Consequences**: Attackers can crash or freeze the device, causing network downtime. Service availability is compromised.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-772**: Missing Release of Resource after Effective Lifetime. <br>🔍 **Flaw**: The system fails to properly release resources after handling specific requests, leading to exhaustion.

Q3Who is affected? (Versions/Components)

🏢 **Affected Products**: <br>1. Cisco Firepower Threat Defense (FTD) <br>2. Cisco Adaptive Security Appliance (ASA) Software <br>🌍 **Vendor**: Cisco Systems (USA).

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Action**: Trigger a **Denial of Service**. <br>🚫 **Impact**: High Availability (A:L) impact. No data theft (C:N) or modification (I:N), but service stops working.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Exploitation Threshold**: **LOW**. <br>📊 **CVSS**: AV:N (Network), AC:L (Low Complexity), PR:N (No Privileges), UI:N (No User Interaction). <br>🎯 **Easy to exploit** remotely without login.

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

📦 **Public Exploit**: **No**. <br>🚫 **PoC**: None listed in data. <br>🌐 **Wild Exploit**: Unconfirmed. Currently theoretical risk based on CVSS score.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Verify if your device runs **Cisco ASA** or **FTD**. <br>2. Check version against Cisco Security Advisory. <br>3. Monitor for sudden service drops or resource exhaustion logs.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Official Fix**: **Yes**. <br>📢 **Action**: Cisco released a Security Advisory (cisco-sa-asaftd-bf-dos-vDZhLqrW). <br>⬇️ **Step**: Update to the patched version immediately.

Q9What if no patch? (Workaround)

🛑 **No Patch Workaround**: <br>1. **Restrict Access**: Limit network access to management interfaces. <br>2. **Rate Limiting**: Apply ACLs to throttle suspicious traffic. <br>3.…

Read full answer (login)

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. <br>⚠️ **Priority**: Patch ASAP. <br>📉 **Reason**: Remote, unauthenticated, low complexity. Critical infrastructure (Firewalls) at risk of outage.

Continue exploring

Vulnerability detail Full AI analysis (login) Cisco CWE-772