CVE-2026-20015
A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may impact the availability of services to devices elsewhere in the network. This vulnerability is due to a memory leak when parsing IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust resources, causing a DoS condition that will eventually require the device to be manually reloaded.
- Score
- CVSS 3.1 5.8 Medium
- Status
- Analyzed - psirt@cisco.com
- Published
- 2026-03-04
- Last modified
- 2026-03-04
- Weaknesses
- CWE-401
Affected products
- Adaptive Security Appliance Software (Cisco)
- Cisco Secure Firewall Adaptive Security Appliance Asa Software (Cisco)
- Cisco Secure Firewall Threat Defense Ftd Software (Cisco)
- Secure Firewall Threat Defense (Cisco)
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG
