CVE-2025-20192
A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated,…
- 7.7HighCVSS base score
- 0.48%Exploitation in 30 daysEPSS · top 58% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By cisco
- 7 months later
· 7 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | High7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.48% · top 58% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Affected products
- affected 3.13.0S
- affected 3.13.1S
- affected 3.13.2S
- affected 3.13.3S
- affected 3.13.4S
- affected 3.13.5S
- affected 3.13.6S
- affected 3.13.7S
- affected 3.13.6aS
- affected 3.13.8S
- affected 3.13.9S
- affected 3.13.10S
- affected 3.14.0S
- affected 3.14.1S
- affected 3.14.2S
- affected 3.14.3S
- affected 3.14.4S
- affected 3.15.0S
- affected 3.15.1S
- affected 3.15.2S
- affected 3.15.1cS
- affected 3.15.3S
- affected 3.15.4S
- affected 3.16.0S
- affected 3.16.1aS
- affected 3.16.2S
- affected 3.16.0cS
- affected 3.16.3S
- affected 3.16.4aS
- affected 3.16.4bS
- affected 3.16.5S
- affected 3.16.4dS
- affected 3.16.6S
- affected 3.16.7S
- affected 3.16.6bS
- affected 3.16.7aS
- affected 3.16.7bS
- affected 3.16.8S
- affected 3.16.9S
- affected 3.16.10S
- and 149 more
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-13901 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-20192)Record last updated .