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CVE-2026-20086

Estado: Pendiente de análisisAlta (8.6)—

A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) packets of Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper handling of a malformed CAPWAP packet. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de red sin autenticación (AV:N/PR:N/UI:N) que causa recarga del dispositivo; explotación T1190 (aplicación expuesta CAPWAP), impacto DoS por recarga (T1499.004 - endpoint).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Cisco — IOS XE Wireless Controller SoftwareAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "cveTags": [],
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          "id": "CVE-2026-20086",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-03-26T17:40:31.927726Z"
        }
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.9
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  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco IOS XE Software",
          "versions": [
            {
              "status": "affected",
              "version": "17.14.1"
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            {
              "status": "affected",
              "version": "17.15.1"
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              "version": "17.16.1"
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            {
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  "published": "2026-03-25T16:16:13.920",
  "references": [
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-dos-hnX5KGOm",
      "source": "psirt@cisco.com"
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  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
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      "source": "psirt@cisco.com",
      "description": [
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    {
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      "value": "A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) packets of Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper handling of a malformed CAPWAP packet. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition."
    },
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      "lang": "es",
      "value": "Una vulnerabilidad en el procesamiento de paquetes de Control y Aprovisionamiento de Puntos de Acceso Inalámbricos (CAPWAP) de Cisco IOS XE Wireless Controller Software para la familia Catalyst CW9800 podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a un manejo inadecuado de un paquete CAPWAP malformado. Un atacante podría explotar esta vulnerabilidad enviando un paquete CAPWAP malformado a un dispositivo afectado. Un exploit exitoso podría permitir al atacante causar que el dispositivo afectado se reinicie inesperadamente, lo que resultaría en una condición de DoS."
    }
  ],
  "lastModified": "2026-06-17T10:17:03.503",
  "sourceIdentifier": "psirt@cisco.com"
}