CVE-2025-20224
Last modified
CVE-2025-20224 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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. EPSS estimates a 0.68% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Secure Firewall Threat Defense | 6.2.3 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.1 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.2 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.3 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.4 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.5 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.6 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.7 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.8 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.9 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.10 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.11 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.12 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.13 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.14 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.15 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.16 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.17 |
| Cisco | Secure Firewall Threat Defense | 6.2.3.18 |
| Cisco | Secure Firewall Threat Defense | 6.4.0 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.1 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.2 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.3 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.4 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.5 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.6 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.7 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.8 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.9 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.10 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.11 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.12 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.13 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.14 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.15 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.16 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.17 |
| Cisco | Secure Firewall Threat Defense | 6.4.0.18 |
| Cisco | Secure Firewall Threat Defense | 6.6.0 |
| Cisco | Secure Firewall Threat Defense | 6.6.0.1 |
| Cisco | Secure Firewall Threat Defense | 6.6.1 |
| Cisco | Secure Firewall Threat Defense | 6.6.3 |
| Cisco | Secure Firewall Threat Defense | 6.6.4 |
| Cisco | Secure Firewall Threat Defense | 6.6.5 |
| Cisco | Secure Firewall Threat Defense | 6.6.5.1 |
| Cisco | Secure Firewall Threat Defense | 6.6.5.2 |
| Cisco | Secure Firewall Threat Defense | 6.6.7 |
| Cisco | Secure Firewall Threat Defense | 6.6.7.1 |
| Cisco | Secure Firewall Threat Defense | 6.6.7.2 |
| Cisco | Secure Firewall Threat Defense | 7.0.0 |
Showing 50 of 314 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-20224?
How severe is CVE-2025-20224?
How do I fix CVE-2025-20224?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2025
- CVE-2025-20219A vulnerability in the implementation of access control rule…5.3
- CVE-2025-2022Ashlar-Vellum Cobalt VS File Parsing Type Confusion Remote C…7.8
- CVE-2025-20220A vulnerability in the CLI of Cisco Secure Firewall Manageme…6
- CVE-2025-20221A vulnerability in the packet filtering features of Cisco IO…9.1
- CVE-2025-20222A vulnerability in the RADIUS proxy feature for the IPsec VP…8.6
- CVE-2025-20223A vulnerability in Cisco Catalyst Center, formerly Cisco DNA…4.7
- CVE-2025-20225A vulnerability in the Internet Key Exchange Version 2 (IKEv…5.8
- CVE-2025-20226In Splunk Enterprise versions below 9.4.1, 9.3.3, 9.2.5, and…5.7
- CVE-2025-20227In Splunk Enterprise versions below 9.4.1, 9.3.3, 9.2.5, and…4.3
- CVE-2025-20228In Splunk Enterprise versions below 9.3.3, 9.2.5, and 9.1.8 …6.5
- CVE-2025-20229In Splunk Enterprise versions below 9.3.3, 9.2.5, and 9.1.8…8
- CVE-2025-2023Ashlar-Vellum Cobalt LI File Parsing Integer Overflow Remote…7.8
Are you affected by CVE-2025-20224?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST