CVE-2026-20015
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.
How to fix
- cisco secure_firewall_threat_defense7.2.11, 7.4.3, 7.6.4, 7.7.11 or later
- cisco adaptive_security_appliance_software9.18.4.71, 9.20.4.10, 9.22.2.13, 9.23.1.19 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco secure_firewall_threat_defense | 7.2.0 ≤ v < 7.2.11, 7.3.0 ≤ v < 7.4.3, 7.6.0 ≤ v < 7.6.4, 7.7.0 ≤ v < 7.7.11 | 7.2.11, 7.4.3, 7.6.4, 7.7.11 |
| cisco adaptive_security_appliance_software | 9.18.1 ≤ v < 9.18.4.71, 9.19.1 ≤ v < 9.20.4.10, 9.22.1.1 ≤ v < 9.22.2.13, 9.23.1 ≤ v < 9.23.1.19 | 9.18.4.71, 9.20.4.10, 9.22.2.13, 9.23.1.19 |
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Attack Surface Management
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