CVE-2025-20192: A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated, remote...
Description
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.
Classification
CVE ID: CVE-2025-20192
CVSS Base Severity: HIGH
CVSS Base Score: 7.7
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Problem Types
Improper Handling of Undefined ValuesAffected Products
Vendor: Cisco
Product: Cisco IOS XE Software
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.17% (probability of being exploited)
EPSS Percentile: 38.86% (scored less or equal to compared to others)
EPSS Date: 2025-06-03 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-20192https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ikev1-dos-XHk3HzFC