{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-13T19:15:07.883","vulnerabilities":[{"cve":{"id":"CVE-2020-3421","sourceIdentifier":"psirt@cisco.com","published":"2020-09-24T18:15:18.917","lastModified":"2024-11-21T05:31:01.467","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Multiple vulnerabilities in the Zone-Based Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload or stop forwarding traffic through the firewall. The vulnerabilities are due to incomplete handling of Layer 4 packets through the device. An attacker could exploit these vulnerabilities by sending a certain sequence of traffic patterns through the device. A successful exploit could allow the attacker to cause the device to reload or stop forwarding traffic through the firewall, resulting in a denial of service. For more information about these vulnerabilities, see the Details section of this advisory."},{"lang":"es","value":"Múltiples vulnerabilidades en la funcionalidad Zone-Based Firewall de Cisco IOS XE Software, podrían permitir a un atacante remoto no autenticado causar que el dispositivo se recargue o deje de reenviar tráfico por medio del firewall. Las vulnerabilidades son debido al manejo incompleto de los paquetes de Capa 4 a través del dispositivo. Un atacante podría explotar estas vulnerabilidades mediante el envío de una determinada secuencia de patrones de tráfico a través del dispositivo. Una explotación con éxito podría permitir al atacante causar que el dispositivo se recargue o deje de reenviar tráfico por medio del firewall, resultando en una denegación de servicio. Para más información sobre estas vulnerabilidades, consulte la sección Detalles de este 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