CVE-2025-20192
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 35% of all known CVEs.
References
Related Vulnerabilities
Other CWE-232 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-40775 | High | 7.5 | 12% | - | Fix |
| CVE-2023-2968 | High | 7.5 | 1.5% | - | - |
| CVE-2021-34705 | Medium | 5.3 | 1.0% | - | - |
| CVE-2022-22213 | Medium | 5.9 | 0.7% | - | - |
| CVE-2023-39914 | High | 7.5 | 0.6% | - | Fix |
| CVE-2023-39915 | High | 7.5 | 0.5% | - | Fix |
Common questions
How do I fix CVE-2025-20192?
No published fix for CVE-2025-20192 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2025-20192 being actively exploited?
Not that we know of. CVE-2025-20192 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.43% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.
How severe is CVE-2025-20192?
CVE-2025-20192 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-08.