SECUFOCUSNOW
Home›CVE index›CVE-2024-20481
CISA KEV · Known exploitedMedium

CVE-2024-20481

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)

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...

CVSS
5.8
EPSS
15.9%
96.6% percentile
CISA KEV
Listed
Published
2024.10.24
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability15.9%
Technical severityCVSS 5.8

Vulnerability overview

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...

Affected product and versions

Product
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Affected versions
9.8.1, 9.8.1.5, 9.8.1.7, 9.8.2, 9.8.2.8, 9.8.2.14, 9.8.2.15, 9.8.2.17, 9.8.2.20, 9.8.2.24, 9.8.2.26, 9.8.2.28, 9.8.2.33, 9.8.2.35, 9.8.2.38, 9.8.3.8, 9.8.3.11, 9.8.3.14, 9.8.3.16, 9.8.3.18
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due date: 2024.11.14
  1. 1
    Identify

    Confirm that Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CWE
CWE-772
KEV added
2024.10.24
Ransomware use
미확인
CVE-2024-20481 — Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | SECUFOCUS NOW