← Database

CVE-2021-34770

CRITICAL CVSS: 10.0 Published: 2021-09-23 Modified: 2026-06-17

Description

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a logic error that occurs during the validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the affected device to crash and reload, resulting in a DoS condition.

Affected Platforms

Cisco Catalyst 9800-40Cisco Catalyst 9800-L-CCisco Catalyst 9800-L-FCisco Catalyst 9800-ClCisco Ios XeCisco Catalyst 9800-LCisco Catalyst 9800-40 Wireless ControllerCisco Catalyst 9800-80 Wireless ControllerCisco Catalyst 9800Cisco Catalyst 9800-80

Weakness Type

CWE-122, CWE-787

References