7.5
High
CVE-2025-20209 A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XR Software 24.2 | 24.2.1 → 24.2.11 | No fix stated |
| Cisco IOS XR Software 24.1 | 24.1.1 → 24.1.2 | No fix stated |
| Cisco IOS XR Software 7.11 | 7.11.1 → 7.11.2 | No fix stated |
| Cisco IOS XR Software 7.10 | 7.10.1 → 7.10.2 | No fix stated |
| Cisco IOS XR Software 7.9 | 7.9.1 → 7.9.2 | No fix stated |
| Cisco IOS XR Software 7.8 | 7.8.1 → 7.8.22 | No fix stated |
| Cisco IOS XR Software 7.7 | 7.7.1 → 7.7.21 | No fix stated |
| Cisco IOS XR Software 7.6 | 7.6.1 → 7.6.2 | No fix stated |
| Cisco IOS XR Software 7.5 | 7.5.1 → 7.5.2 | No fix stated |
Show the 7 other branches Hide the 7 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XR Software 7.4 | 7.4.1 → 7.4.2 | No fix stated |
| Cisco IOS XR Software 7.3 | 7.3.1 → 7.3.27 | No fix stated |
| Cisco IOS XR Software 7.2 | 7.2.0 → 7.2.2 | No fix stated |
| Cisco IOS XR Software 7.1 | 7.1.1 → 7.1.2 | No fix stated |
| Cisco IOS XR Software 7.0 | 7.0.0 → 7.0.2 | No fix stated |
| Cisco IOS XR Software 6.6 | 6.6.1 → 6.6.25 | No fix stated |
| Cisco IOS XR Software 6.5 | 6.5.1 → 6.5.3 | No fix stated |
References
- cisco-sa-xrike-9wYGpRGq sec.cloudapps.cisco.com
- Crafting endless AS-PATHS in BGP blog.apnic.net
Timeline
- Published
- Last modified
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