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CVE-2024-20481

CWE-772

High

78.4

RPS

Description

A vulnerability in the Remote Access VPN (RAVPN) service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of the RAVPN service. This vulnerability is due to resource exhaustion. An attacker could exploit this vulnerability by sending a large number of VPN authentication requests to an affected device. A successful exploit could allow the attacker to exhaust resources, resulting in a DoS of the RAVPN service on the affected device. Depending on the impact of the attack, a reload of the device may be required to restore the RAVPN service. Services that are not related to VPN are not affected. Cisco Talos discussed these attacks in the blog post Large-scale brute-force activity targeting VPNs, SSH services with commonly used login credentials.

Source: NVD

Signals

CVSS
5.8
Medium · v3.1
EPSS
15.87%
Probability of exploitation in the next 30 days (FIRST)
CISA KEV
In CISA KEV since Oct 2024
Fix commit
No known fix commit
Sources: MoreFixes, FreshFixes
Weakness
CWE-772
Published
23 Oct 2024
Last modified 11 Aug 2026

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Data as of 7 Oct 2026, 05:16 UK time

CVE-2024-20481 · RPS 78.4 · DevSecure Intelligence