CVE-2025-20209
Description
A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets. This vulnerability is due to improper handling of malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to prevent the affected device from processing any control plane UDP packets, resulting in a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
CVSS Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Threat Intelligence
Weaknesses 1
Affected Products 44
| Vendor | Product | Version | Range |
|---|---|---|---|
| cisco | ios_xr | 6.5.1 | any |
| cisco | ios_xr | 6.5.2 | any |
| cisco | ios_xr | 6.5.3 | any |
| cisco | ios_xr | 6.6.1 | any |
| cisco | ios_xr | 6.6.2 | any |
| cisco | ios_xr | 6.6.3 | any |
| cisco | ios_xr | 6.6.25 | any |
| cisco | ios_xr | 7.0.0 | any |
| cisco | ios_xr | 7.0.1 | any |
| cisco | ios_xr | 7.0.2 | any |
| cisco | ios_xr | 7.1.1 | any |
| cisco | ios_xr | 7.1.2 | any |
| cisco | ios_xr | 7.2.0 | any |
| cisco | ios_xr | 7.2.1 | any |
| cisco | ios_xr | 7.2.2 | any |
| cisco | ios_xr | 7.3.1 | any |
| cisco | ios_xr | 7.3.2 | any |
| cisco | ios_xr | 7.3.27 | any |
| cisco | ios_xr | 7.4.1 | any |
| cisco | ios_xr | 7.4.2 | any |
| cisco | ios_xr | 7.5.1 | any |
| cisco | ios_xr | 7.5.2 | any |
| cisco | ios_xr | 7.6.1 | any |
| cisco | ios_xr | 7.6.2 | any |
| cisco | ios_xr | 7.7.1 | any |
| cisco | ios_xr | 7.7.2 | any |
| cisco | ios_xr | 7.7.21 | any |
| cisco | ios_xr | 7.8.1 | any |
| cisco | ios_xr | 7.8.2 | any |
| cisco | ios_xr | 7.8.22 | any |
| cisco | ios_xr | 7.9.1 | any |
| cisco | ios_xr | 7.9.2 | any |
| cisco | ios_xr | 7.10.1 | any |
| cisco | ios_xr | 7.10.2 | any |
| cisco | ios_xr | 7.11.1 | any |
| cisco | ios_xr | 7.11.2 | any |
| cisco | ios_xr | 24.1.1 | any |
| cisco | ios_xr | 24.1.2 | any |
| cisco | ios_xr | 24.2.1 | any |
| cisco | ios_xr | 24.2.11 | any |
| cisco | ncs_1004 | * | any |
| cisco | ncs_1010 | * | any |
| cisco | ncs_1014 | * | any |
| cisco | ncs_540l | * | any |
References 2
- blog.apnic.net https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
- sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrike-9wYGpRGq
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.