CVE-2026-20086

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 v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-dos-hnX5KGOm

Configurations

No configuration.

History

17 Jun 2026, 10:17

Type	Values Removed	Values Added
Summary		(es) 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.

25 Mar 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-25 16:16

Updated : 2026-06-17 10:17

NVD link : CVE-2026-20086

Mitre link : CVE-2026-20086

CVE.ORG link : CVE-2026-20086

JSON object : View

Products Affected

No product.

CWE

CWE-230

Improper Handling of Missing Values

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