FKIE_CVE-2025-20209

Vulnerability from fkie_nvd - Published: 2025-03-12 16:15 - Updated: 2025-08-01 14:59
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
psirt@cisco.comhttps://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/Not Applicable
psirt@cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrike-9wYGpRGqVendor Advisory
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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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la funci\u00f3n Intercambio de Claves por Internet versi\u00f3n 2 (IKEv2) del software Cisco IOS XR podr\u00eda permitir que un atacante remoto no autenticado impida que un dispositivo afectado procese paquetes UDP del plano de control. Esta vulnerabilidad se debe a la gesti\u00f3n incorrecta de paquetes IKEv2 malformados. Un atacante podr\u00eda explotar esta vulnerabilidad enviando paquetes IKEv2 malformados a un dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante impedir que el dispositivo afectado procese paquetes UDP del plano de control, lo que provocar\u00eda una denegaci\u00f3n de servicio (DoS). Cisco ha publicado actualizaciones de software que solucionan esta vulnerabilidad. No existen workarounds que la solucionen."
    }
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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",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-03-12T16:15:22.507",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Not Applicable"
      ],
      "url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
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  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Primary"
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}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.