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CVE-2026-20015

Estado: AnalizadaMedia (5.8)—

A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may impact the availability of services to devices elsewhere in the network.

This vulnerability is due to a memory leak when parsing IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust resources, causing a DoS condition that will eventually require the device to be manually reloaded.

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 (2)

CWE

Referencias

JSON original (NVD)

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  "published": "2026-03-04T18:16:15.853",
  "references": [
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ikev2-dos-eBueGdEG",
      "tags": [
        "Vendor Advisory"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
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      "lang": "en",
      "value": "A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may impact the availability of services to devices elsewhere in the network.\r\n\r This vulnerability is due to a memory leak when parsing IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust resources, causing a DoS condition that will eventually require the device to be manually reloaded."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la función IKEv2 de Cisco Secure Firewall ASA Software y Cisco Secure FTD Software podría permitir a un atacante remoto no autenticado causar una condición DoS en un dispositivo afectado que podría impactar la disponibilidad de los servicios a dispositivos en otras partes de la red. Esta vulnerabilidad se debe a una fuga de memoria al analizar paquetes IKEv2. Un atacante podría explotar esta vulnerabilidad enviando paquetes IKEv2 manipulados a un dispositivo afectado. Un exploit exitoso podría permitir al atacante agotar los recursos, causando una condición DoS que eventualmente requerirá que el dispositivo sea recargado manualmente."
    }
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  "lastModified": "2026-08-11T19:40:47.230",
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