CVE-2025-20222

A vulnerability in the RADIUS proxy feature for the IPsec VPN feature of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper processing of IPv6 packets. An attacker could exploit this vulnerability by sending IPv6 packets over an IPsec VPN connection to an affected device. A successful exploit could allow the attacker to trigger a reload of the device, resulting in a DoS condition.

• CWE-120

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fp2k-IPsec-dos-tjwgdZCO

Published

Aug 14, 2025

Last Modified

Jun 17, 2026

Status

Deferred

• 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.

• CVE-2025-20217A vulnerability in the packet inspection functionality of th…8.6
• CVE-2025-20218A vulnerability in the web-based management interface of Cis…4.9
• 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-2025-20223A vulnerability in Cisco Catalyst Center, formerly Cisco DNA…4.7
• CVE-2025-20224A vulnerability in the Internet Key Exchange Version 2 (IKEv…5.8
• 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