CVE-2025-20192

A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The attacker must have valid IKEv1 VPN credentials to exploit this vulnerability. This vulnerability is due to improper validation of IKEv1 phase 2 parameters before the IPsec security association creation request is handed off to the hardware cryptographic accelerator of an affected device. An attacker could exploit this vulnerability by sending crafted IKEv1 messages to the affected device. A successful exploit could allow the attacker to cause the device to reload.

• CWE-232

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ikev1-dos-XHk3HzFCVendor Advisory

Published

May 7, 2025

Last Modified

Sep 28, 2026

Status

Analyzed

• 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-2025-20187A vulnerability in the application data endpoints of Cisco C…6.5
• CVE-2025-20188A vulnerability in the Out-of-Band Access Point (AP) Image D…10
• CVE-2025-20189A vulnerability in the Cisco Express Forwarding functionalit…7.4
• CVE-2025-2019Ashlar-Vellum Cobalt VC6 File Parsing Heap-based Buffer Over…7.8
• CVE-2025-20190A vulnerability in the lobby ambassador web interface of Cis…6.5
• CVE-2025-20191A vulnerability in the Switch Integrated Security Features (…7.4
• CVE-2025-20193A vulnerability in the web-based management interface of Cis…6.5
• CVE-2025-20194A vulnerability in the web-based management interface of Cis…5.4
• CVE-2025-20195A vulnerability in the web-based management interface of Cis…4.3
• CVE-2025-20196A vulnerability in the Cisco IOx application hosting environ…5.3
• CVE-2025-20197A vulnerability in the CLI of Cisco IOS XE Software could al…8.2
• CVE-2025-20198A vulnerability in the CLI of Cisco IOS XE Software could al…8.2