CVE-2024-20481
Actively exploited. CVE-2024-20481 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-10-24) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a missing release of resource after effective lifetime vulnerability that could allow an unauthenticated, remote attacker to cause a denial-of-service (DoS) of the RAVPN service.
CSIRTS triage
- What
- A missing release of resource vulnerability could allow unauthenticated remote attackers to cause a denial-of-service.
- Who is affected
- Deployments of Cisco ASA and FTD are affected.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest security patches provided by Cisco.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 97% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2024-20481: Cisco ASA and FTD Denial-of-Service Vulnerabilitycisa-kev · 2024-10-24
External references
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[](https://www.csirts.com/cve/CVE-2024-20481)