Exploited CVEs / Cisco / CVE-2024-20481
CVE-2024-20481
Cisco ASA and FTD Denial-of-Service Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2024-11-14 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Cisco Security Advisories (PSIRT), linked below.
Actively exploited Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) vulnerability, Medium severity, CVSS 5.8. Added to the CISA KEV catalog 2024-10-24.
Risk summary
Updated July 27, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2024-20481
This Cisco ASA and FTD flaw is a resource exhaustion problem in the RAVPN service: unauthenticated remote attackers can drive the VPN into denial of service. It surfaced in the context of large-scale credential brute-forcing against VPN endpoints and was KEV-listed on 2024-10-24. The Medium CVSS 5.8 rating hides the operational pain of a remote workforce locked out of the network.
Do this: Apply Cisco's fixed ASA and FTD releases and enable rate limiting and threat detection for remote access VPN connection attempts.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2024-20481
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2024-20481
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2024-11-14 (past due).
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2024-20481
The authoritative fix and affected-version list are published by the vendor. Find the Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) advisory on Cisco Security Advisories (PSIRT).
Common questions about CVE-2024-20481
Is CVE-2024-20481 actively exploited?
Yes. CVE-2024-20481 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2024-10-24, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 16%.
What is the CISA deadline and required action for CVE-2024-20481?
CISA set the federal (BOD 22-01) remediation due date at 2024-11-14, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
What fixes CVE-2024-20481?
The authoritative fix is in the vendor advisory: see Cisco Security Advisories (PSIRT) for the patched Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2024-20481?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2024-20481's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
More exploited Cisco CVEs
The newest Cisco entries on the CISA KEV catalog:
All Cisco exploited CVEs on one page: Cisco vulnerabilities actively exploited.
Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
