A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending a continuous stream of crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to partially exhaust system memory, causing system instability like being unable to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Cisco Asa | — | Upgrade to the latest version of Cisco ASA to resolve this vulnerability. | Aug 15, 2025 | Aug 14, 2025 |
| Cisco Ftd | — | Upgrade to the latest version of Cisco FTD to resolve this vulnerability. | Aug 15, 2025 | Aug 14, 2025 |
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