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CVE-2024-20481: Cisco ASA and FTD Denial-of-Service Vulnerability

criticalknown exploitedCVE-2024-20481
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation 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

vendor: Ciscoproduct: Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)Denial of service
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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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-10-24
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-20481

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2024-20481coverage & exploitation statusNVD · CVE.org

Recent advisories for Cisco ASA and

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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