CVE-2025-20192 - CVE House
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Status published High CVE-2025-20192

A vulnerability in the Internet Key Exchange version 1 (IKEv1)...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Cisco IOS XE Software
Vulnerable Versions:
3.13.0S, 3.13.1S, 3.13.2S, 3.13.3S, 3.13.4S, 3.13.5S, 3.13.6S, 3.13.7S, 3.13.6aS, 3.13.8S, 3.13.9S, 3.13.10S, 3.14.0S, 3.14.1S, 3.14.2S, 3.14.3S, 3.14.4S, 3.15.0S, 3.15.1S, 3.15.2S, 3.15.1cS, 3.15.3S, 3.15.4S, 3.16.0S, 3.16.1aS, 3.16.2S, 3.16.0cS, 3.16.3S, 3.16.4aS, 3.16.4bS, 3.16.5S, 3.16.4dS, 3.16.6S, 3.16.7S, 3.16.6bS, 3.16.7aS, 3.16.7bS, 3.16.8S, 3.16.9S, 3.16.10S, 3.17.0S, 3.17.1S, 3.17.2S, 3.17.3S, 3.17.4S, 16.2.1, 16.2.2, 16.3.1, 16.3.2, 16.3.3, 16.3.1a, 16.3.4, 16.3.5, 16.3.6, 16.3.7, 16.3.8, 16.3.9, 16.3.10, 16.3.11, 16.4.1, 16.4.2, 16.4.3, 16.5.1, 16.5.1b, 16.5.2, 16.5.3, 3.18.2aSP, 16.6.1, 16.6.2, 16.6.3, 16.6.4, 16.6.5, 16.6.6, 16.6.7, 16.6.8, 16.6.9, 16.6.10, 16.7.1, 16.7.2, 16.7.3, 16.8.1, 16.8.1s, 16.8.2, 16.8.3, 16.9.1, 16.9.2, 16.9.1s, 16.9.3, 16.9.4, 16.9.5, 16.9.6, 16.9.7, 16.9.8, 16.10.1, 16.10.1a, 16.10.1b, 16.10.1s, 16.10.1e, 16.10.2, 16.10.3, 16.11.1, 16.11.1a, 16.11.2, 16.11.1s, 16.12.1, 16.12.1s, 16.12.1a, 16.12.1c, 16.12.2, 16.12.3, 16.12.8, 16.12.2s, 16.12.4, 16.12.3s, 16.12.5, 16.12.6, 16.12.7, 17.1.1, 17.1.1s, 17.1.1t, 17.1.3, 17.2.1, 17.2.1r, 17.2.1v, 17.2.2, 17.2.3, 17.3.1, 17.3.2, 17.3.3, 17.3.1a, 17.3.4, 17.3.5, 17.3.4a, 17.3.6, 17.3.7, 17.3.8, 17.3.8a, 17.4.1, 17.4.2, 17.4.1a, 17.4.1b, 17.5.1, 17.5.1a, 17.6.1, 17.6.2, 17.6.1a, 17.6.3, 17.6.1y, 17.6.3a, 17.6.4, 17.6.5, 17.6.6, 17.6.6a, 17.6.5a, 17.6.7, 17.6.8, 17.6.8a, 17.7.1, 17.7.1a, 17.7.2, 17.10.1, 17.10.1a, 17.8.1, 17.8.1a, 17.9.1, 17.9.2, 17.9.1a, 17.9.3, 17.9.2a, 17.9.3a, 17.9.4, 17.9.5, 17.9.4a, 17.9.5a, 17.9.5b, 17.9.5e, 17.9.5f, 17.11.1, 17.11.1a, 17.12.1, 17.12.1a, 17.12.2, 17.12.3, 17.12.2a, 17.12.3a, 17.13.1, 17.13.1a, 17.14.1, 17.14.1a

Timeline

Official Publish: May 7th, 2025
Last Modified: May 7th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weaknesses (CWE)

CWE-232

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.