CVE-2025-20192High· 7.7▾ TwilightA 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 cre…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.4 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 28.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
0.4% → 0.5%
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.
ios_xe = 3.13.0sios_xe = 3.13.1sios_xe = 3.13.2sios_xe = 3.13.3sios_xe = 3.13.4sios_xe = 3.13.5sios_xe = 3.13.6asios_xe = 3.13.6sios_xe = 3.13.7sios_xe = 3.13.8sios_xe = 3.13.9sios_xe = 3.13.10sios_xe = 3.14.0sios_xe = 3.14.1sios_xe = 3.14.2sios_xe = 3.14.3sios_xe = 3.14.4sios_xe = 3.15.0sios_xe = 3.15.1csios_xe = 3.15.1sios_xe = 3.15.2sios_xe = 3.15.3sios_xe = 3.15.4sios_xe = 3.16.0csios_xe = 3.16.0sios_xe = 3.16.1asios_xe = 3.16.2sios_xe = 3.16.3sios_xe = 3.16.4asios_xe = 3.16.4bsios_xe = 3.16.4dsios_xe = 3.16.5sios_xe = 3.16.6bsios_xe = 3.16.6sios_xe = 3.16.7asios_xe = 3.16.7bsios_xe = 3.16.7sios_xe = 3.16.8sios_xe = 3.16.9sios_xe = 3.16.10sios_xe = 3.17.0sios_xe = 3.17.1sios_xe = 3.17.2sios_xe = 3.17.3sios_xe = 3.17.4sios_xe = 3.18.2aspios_xe = 16.2.1ios_xe = 16.2.2ios_xe = 16.3.1ios_xe = 16.3.1aios_xe = 16.3.2ios_xe = 16.3.3ios_xe = 16.3.4ios_xe = 16.3.5ios_xe = 16.3.6ios_xe = 16.3.7ios_xe = 16.3.8ios_xe = 16.3.9ios_xe = 16.3.10ios_xe = 16.3.11ios_xe = 16.4.1ios_xe = 16.4.2ios_xe = 16.4.3ios_xe = 16.5.1ios_xe = 16.5.1bios_xe = 16.5.2ios_xe = 16.5.3ios_xe = 16.6.1ios_xe = 16.6.2ios_xe = 16.6.3ios_xe = 16.6.4ios_xe = 16.6.5ios_xe = 16.6.6ios_xe = 16.6.7ios_xe = 16.6.8ios_xe = 16.6.9ios_xe = 16.6.10ios_xe = 16.7.1ios_xe = 16.7.2ios_xe = 16.7.3ios_xe = 16.8.1ios_xe = 16.8.1sios_xe = 16.8.2ios_xe = 16.8.3ios_xe = 16.9.1ios_xe = 16.9.1sios_xe = 16.9.2ios_xe = 16.9.3ios_xe = 16.9.4ios_xe = 16.9.5ios_xe = 16.9.6ios_xe = 16.9.7ios_xe = 16.9.8ios_xe = 16.10.1ios_xe = 16.10.1aios_xe = 16.10.1bios_xe = 16.10.1eios_xe = 16.10.1sios_xe = 16.10.2ios_xe = 16.10.3Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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