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CVSS: 8.6EPSS: 0%CPEs: 466EXPL: 0

A vulnerability in the IKEv1 fragmentation code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a heap underflow, resulting in an affected device reloading. This vulnerability exists because crafted, fragmented IKEv1 packets are not properly reassembled. An attacker could exploit this vulnerability by sending crafted UDP packets to an affected system. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: Only traffic that is directed to the affected system can be used to exploit this vulnerability. This vulnerability can be triggered by IPv4 and IPv6 traffic.. Una vulnerabilidad en el código de fragmentación IKEv1 del software Cisco IOS y Cisco IOS XE podría permitir que un atacante remoto no autenticado provoque un desbordamiento de almacenamiento dinámico, lo que resultaría en la recarga del dispositivo afectado. • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ikev1-NO2ccFWz •

CVSS: 5.6EPSS: 0%CPEs: 338EXPL: 0

A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding. This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition. Una vulnerabilidad en las funciones del puerto asíncrono auxiliar (AUX) del software Cisco IOS XE podría permitir que un atacante local autenticado provoque que un dispositivo afectado se recargue o deje de responder. Esta vulnerabilidad se debe al manejo incorrecto del tráfico de entrada específico cuando el hardware de control de flujo está habilitado en el puerto AUX. • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aux-333WBz8f • CWE-828: Signal Handler with Functionality that is not Asynchronous-Safe •

CVSS: 8.6EPSS: 0%CPEs: 181EXPL: 0

A vulnerability in the IPv4 Software-Defined Access (SD-Access) fabric edge node feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause high CPU utilization and stop all traffic processing, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain IPv4 packets. An attacker could exploit this vulnerability by sending certain IPv4 packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition. Una vulnerabilidad en la función de nodo de borde de la estructura de acceso definido por software (SD-Access) IPv4 del software Cisco IOS XE podría permitir que un atacante remoto no autenticado cause una alta utilización de la CPU y detenga todo el procesamiento del tráfico, lo que resultaría en una denegación de servicio (DoS). condición en un dispositivo afectado. Esta vulnerabilidad se debe al manejo inadecuado de ciertos paquetes IPv4. • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-sda-edge-dos-qZWuWXWG • CWE-783: Operator Precedence Logic Error •

CVSS: 7.4EPSS: 0%CPEs: 441EXPL: 0

A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and have formed an adjacency. Una vulnerabilidad en el protocolo de sistema intermedio a sistema intermedio (IS-IS) del software Cisco IOS y del software Cisco IOS XE podría permitir que un atacante adyacente no autenticado cause una condición de denegación de servicio (DoS) en un dispositivo afectado. • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-sGjyOUHX • CWE-476: NULL Pointer Dereference •

CVSS: 8.6EPSS: 0%CPEs: 373EXPL: 0

A vulnerability in the Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to the incorrect handling of LISP packets. An attacker could exploit this vulnerability by sending a crafted LISP packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: This vulnerability could be exploited over either IPv4 or IPv6 transport. Una vulnerabilidad en la función del Protocolo de separación de ID del localizador (LISP) del software Cisco IOS y del software Cisco IOS XE podría permitir que un atacante remoto no autenticado provoque la recarga de un dispositivo afectado. Esta vulnerabilidad se debe al manejo incorrecto de los paquetes LISP. • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lisp-3gYXs3qP • CWE-674: Uncontrolled Recursion •