CVE-2026-20015
MEDIUM EPSS 21.9%
Published Mar 4, 20263mo ago · Modified Apr 16, 20262mo ago
5.8 CVSS 3.1
Published Mar 4, 2026 3mo ago
Last Modified Apr 16, 2026 2mo ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity None
Availability Low
Threat Intelligence
EPSS Exploit Probability
21.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-401
Affected Products 8
| Vendor | Product | Version | Range |
|---|---|---|---|
| cisco | adaptive_security_appliance_software | * | ≥9.18.1 – <9.18.4.71 |
| cisco | adaptive_security_appliance_software | * | ≥9.19.1 – <9.20.4.10 |
| cisco | adaptive_security_appliance_software | * | ≥9.22.1.1 – <9.22.2.13 |
| cisco | adaptive_security_appliance_software | * | ≥9.23.1 – <9.23.1.19 |
| cisco | firepower_threat_defense_software | * | ≥7.2.0 – <7.2.11 |
| cisco | firepower_threat_defense_software | * | ≥7.3.0 – <7.4.3 |
| cisco | firepower_threat_defense_software | * | ≥7.6.0 – <7.6.4 |
| cisco | firepower_threat_defense_software | * | ≥7.7.0 – <7.7.11 |
References 1
- sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.