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CVE-2015-4205

Estado: ModificadaMedia (5.7)—

Cisco IOS XR 5.3.1 on ASR 9000 devices allows remote attackers to cause a denial of service (NPU chip reset or line-card reload) by sending crafted IEEE 802.3x flow-control PAUSE frames on the local network, aka Bug ID CSCut19959.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Cisco — IOS XR

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2015-4205",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5.7,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
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        "obtainAllPrivilege": false,
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      "affectedData": [
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              "version": "n/a"
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  "published": "2015-06-23T14:59:02.743",
  "references": [
    {
      "url": "http://tools.cisco.com/security/center/viewAlert.x?alertId=39455",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
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      "tags": [
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      "source": "psirt@cisco.com"
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      "url": "http://www.securitytracker.com/id/1032691",
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cisco IOS XR 5.3.1 on ASR 9000 devices allows remote attackers to cause a denial of service (NPU chip reset or line-card reload) by sending crafted IEEE 802.3x flow-control PAUSE frames on the local network, aka Bug ID CSCut19959."
    },
    {
      "lang": "es",
      "value": "Cisco IOS XR 5.3.1 en los dispositivos ASR 9000 permite a atacantes remotos causar una denegación de servicio (restablecimiento del chip NPU o recarga de tarjeta de línea) mediante el envío de tramas manipuladas de PAUSE en el control de flujo de IEEE 802.3x en la red local, también conocido como Bug ID CSCut19959."
    }
  ],
  "lastModified": "2026-06-17T00:26:55.113",
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