Vulnerability in Cisco iOS Xe Software
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Cisco iOS Xe Software — versions 3.13.0S, 3.13.1S, 3.13.2S
- Cisco iOS Xe — versions 16.10.1, 16.10.1a, 16.10.1b
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-20192?
- CVE-2025-20192 is a high-severity vulnerability in Cisco iOS Xe Software, classified under CWE-232. CVSS score: 7.7/10. Published 2025-05-07.
- How severe is CVE-2025-20192?
- High severity. CVSS v3 base score is 7.7 out of 10.