CVE-2025-20192
CVE-2025-20192 is a high-severity vulnerability with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-232.
Key facts
- Severity: High (CVSS 3.x base score 7.7)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-13901
- Weakness: CWE-232
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-20192?
- CVE-2025-20192 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2025-20192 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-20192?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-20192 have an EU (EUVD) identifier?
- Yes. CVE-2025-20192 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13901.
- When was CVE-2025-20192 published?
- CVE-2025-20192 was published on 2025-05-07 and last updated on 2026-06-17.
References
Other CWE-232 vulnerabilities
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- CVE-2023-39914 — High (CVSS 7.5): NLnet Labs' bcder library up to and including version 0.7.2 panics while decoding certain invalid input data rather…
- CVE-2023-2968 — High (CVSS 7.5): A remote attacker can trigger a denial of service in the socket.remoteAddress variable, by sending a crafted HTTP…
- CVE-2025-20314 — Medium (CVSS 6.7): A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker with level-15 privileges or an…
- CVE-2023-36848 — Medium (CVSS 6.5): An Improper Handling of Undefined Values vulnerability in the periodic packet management daemon (PPMD) of Juniper…