FKIE_CVE-2020-3552

Vulnerability from fkie_nvd - Published: 2020-09-24 18:15 - Updated: 2026-06-17 03:18
Severity
7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Summary
A vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by connecting as a wired client to the Ethernet interface of an affected device and sending a series of specific packets within a short time frame. A successful exploit could allow the attacker to cause a NULL pointer access that results in a reload of the affected device.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ethport-dos-xtjTt8pYVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ethport-dos-xtjTt8pYVendor Advisory
Impacted products
Vendor Product Version
cisco wireless_lan_controller *
cisco aironet_1542d -
cisco aironet_1542i -
cisco aironet_1562d -
cisco aironet_1562e -
cisco aironet_1562i -
cisco aironet_1810 -
cisco aironet_1815 -
cisco aironet_1830e -
cisco aironet_1830i -
cisco aironet_1840 -
cisco aironet_1850e -
cisco aironet_1850i -
cisco aironet_2800e -
cisco aironet_2800i -
cisco aironet_3800e -
cisco aironet_3800i -
cisco aironet_3800p -
cisco aironet_4800 -
cisco business_access_points *
cisco access_points *
cisco catalyst_9800-40 -
cisco catalyst_9800-80 -
cisco catalyst_9800-cl -
cisco catalyst_9800-l -
cisco catalyst_9800-l-c -
cisco catalyst_9800-l-f -
cisco aironet_access_point_software 8.10\(1.255\)
cisco aironet_1850e -
cisco aironet_1850i -
To clipboard 

{
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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "A vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by connecting as a wired client to the Ethernet interface of an affected device and sending a series of specific packets within a short time frame. A successful exploit could allow the attacker to cause a NULL pointer access that results in a reload of the affected device."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el manejo de paquetes Ethernet de Cisco Aironet Access Points (APs) Software, podr\u00eda permitir a un atacante adyacente no autenticado causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado.\u0026#xa0;La vulnerabilidad es debido a una comprobaci\u00f3n insuficiente de la entrada.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante la conexi\u00f3n como un cliente cableado a la interfaz Ethernet de un dispositivo afectado y mediante el env\u00edo de una serie de paquetes espec\u00edficos en un corto per\u00edodo de tiempo.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar un acceso al puntero NULL que resulte en una recarga del dispositivo afectado."
    }
  ],
  "id": "CVE-2020-3552",
  "lastModified": "2026-06-17T03:18:34.717",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C",
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        "obtainAllPrivilege": false,
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          "attackVector": "ADJACENT_NETWORK",
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          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          "role": "CISA Coordinator",
          "timestamp": "2024-11-13T17:23:40.472481Z",
          "version": "2.0.3"
        }
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  },
  "published": "2020-09-24T18:15:21.900",
  "references": [
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      "source": "psirt@cisco.com",
      "tags": [
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      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ethport-dos-xtjTt8pY"
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  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-476"
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      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
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          "value": "CWE-476"
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      ],
      "source": "nvd@nist.gov",
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    }
  ]
}



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