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CVE-2021-34769

HIGH CVSS: 8.6 Published: 2021-09-23 Modified: 2026-06-17

Description

Multiple vulnerabilities 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 cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to 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-415, CWE-415

References