NULL pointer dereference in Cisco Firewall Threat Defense (FTD) and Cisco Adaptive Security Appliance (ASA) - CVE-2024-20426

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Main Vulnerability Database Vulnerabilities #VU99338

NULL pointer dereference in Cisco Firewall Threat Defense (FTD) and Cisco Adaptive Security Appliance (ASA) - CVE-2024-20426

Published: October 25, 2024


Vulnerability identifier: #VU99338
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-20426
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Internet Key Exchange version 2 (IKEv2) protocol for VPN termination. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Affected software

Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)

How to mitigate CVE-2024-20426

Install updates from vendor's website.

Cisco Firewall Threat Defense (FTD) - addressed in versions 7.2.9, 7.4.2, 7.4.2.1, 7.6.0, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.19.1.37, 9.20.2.22, 9.20.3, 9.20.3.4, 9.20.3.7, 9.22.1.1
Cisco Adaptive Security Appliance (ASA) - addressed in versions 7.2.9, 7.4.2, 7.4.2.1, 7.6.0, 9.18.4.34, 9.18.4.40, 9.18.4.47, 9.19.1.37, 9.20.2.22, 9.20.3, 9.20.3.4, 9.20.3.7, 9.22.1.1

External References

Related Security Bulletins