fkie_cve-2025-20209
Vulnerability from fkie_nvd
Published
2025-03-12 16:15
Modified
2025-08-01 14:59
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| cisco | ios_xr | 6.5.1 | |
| cisco | ios_xr | 6.5.2 | |
| cisco | ios_xr | 6.5.3 | |
| cisco | ios_xr | 6.6.1 | |
| cisco | ios_xr | 6.6.2 | |
| cisco | ios_xr | 6.6.3 | |
| cisco | ios_xr | 6.6.25 | |
| cisco | ios_xr | 7.0.0 | |
| cisco | ios_xr | 7.0.1 | |
| cisco | ios_xr | 7.0.2 | |
| cisco | ios_xr | 7.1.1 | |
| cisco | ios_xr | 7.1.2 | |
| cisco | ios_xr | 7.2.0 | |
| cisco | ios_xr | 7.2.1 | |
| cisco | ios_xr | 7.2.2 | |
| cisco | ios_xr | 7.3.1 | |
| cisco | ios_xr | 7.3.2 | |
| cisco | ios_xr | 7.3.27 | |
| cisco | ios_xr | 7.4.1 | |
| cisco | ios_xr | 7.4.2 | |
| cisco | ios_xr | 7.5.1 | |
| cisco | ios_xr | 7.5.2 | |
| cisco | ios_xr | 7.6.1 | |
| cisco | ios_xr | 7.6.2 | |
| cisco | ios_xr | 7.7.1 | |
| cisco | ios_xr | 7.7.2 | |
| cisco | ios_xr | 7.7.21 | |
| cisco | ios_xr | 7.8.1 | |
| cisco | ios_xr | 7.8.2 | |
| cisco | ios_xr | 7.8.22 | |
| cisco | ios_xr | 7.9.1 | |
| cisco | ios_xr | 7.9.2 | |
| cisco | ios_xr | 7.10.1 | |
| cisco | ios_xr | 7.10.2 | |
| cisco | ios_xr | 7.11.1 | |
| cisco | ios_xr | 7.11.2 | |
| cisco | ios_xr | 24.1.1 | |
| cisco | ios_xr | 24.1.2 | |
| cisco | ios_xr | 24.2.1 | |
| cisco | ios_xr | 24.2.11 | |
| cisco | ncs_1004 | - | |
| cisco | ncs_1010 | - | |
| cisco | ncs_1014 | - | |
| cisco | ncs_540l | - |
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"descriptions": [
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"value": "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.\u0026nbsp;\r\n\r\nThis 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.\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability."
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"id": "CVE-2025-20209",
"lastModified": "2025-08-01T14:59:24.573",
"metrics": {
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{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "psirt@cisco.com",
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},
"published": "2025-03-12T16:15:22.507",
"references": [
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"source": "psirt@cisco.com",
"tags": [
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],
"url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/"
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"tags": [
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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