Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability (Cisco Cisco IOS XR Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.55 % · percentile 46 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-770 — Allocation of Resources Without Limits or Throttling
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | cisco |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2025-7579
- GCVE · GCVE-0-2025-20209
CERT-FR advisories
- CERTFR-2025-AVI-0207 — Multiples vulnérabilités dans Cisco IOS XR · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.0.0:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.27:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.5.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.6.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.6.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.7.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.7.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.7.21:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.8.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.8.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.8.22:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.9.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.10.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.11.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:24.1.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:24.2.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:24.2.11:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IOS XR Software | affected 6.5.3 ; affected 6.6.1 ; affected 6.5.2 ; affected 6.6.2 ; affected 6.5.1 ; affected 7.0.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |