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CVE-2021-1565 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CNA: [email protected]CVSS-B:8.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY	CVE	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOY	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-415	Double Free	[email protected]
CWE-415	Double Free	[email protected]

Affected Products

Product	Versions
cisco ios xe	3.15.1xbs 3.15.2xbs 17.3.1 17.3.2 17.4.1
CPE cpe:2.3:o:cisco:ios_xe:3.15.1xbs:::::::* cpe:2.3:o:cisco:ios_xe:3.15.2xbs:::::::* cpe:2.3:o:cisco:ios_xe:17.3.1:::::::* cpe:2.3:o:cisco:ios_xe:17.3.2:::::::* cpe:2.3:o:cisco:ios_xe:17.4.1:::::::* cpe:2.3:o:cisco:ios_xe:17.5.1:::::::* Remediation No remediation found in references.
cisco embedded wireless controller	All versions
CPE cpe:2.3:a:cisco:embedded_wireless_controller:::::::: Remediation No remediation found in references.
cisco catalyst 9300-24p-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24p-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24p-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24p-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24s-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24s-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24s-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24s-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24t-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24t-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24t-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24t-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24u-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24u-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24u-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24u-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24ux-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24ux-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-24ux-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-24ux-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48p-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48p-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48p-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48p-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48s-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48s-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48s-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48s-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48t-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48t-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48t-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48t-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48u-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48u-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48u-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48u-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48un-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48un-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48un-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48un-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48uxm-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48uxm-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300-48uxm-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300-48uxm-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24p-4g-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24p-4g-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24p-4g-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24p-4g-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24p-4x-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24p-4x-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24p-4x-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24p-4x-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24t-4g-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24t-4g-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24t-4g-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24t-4g-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24t-4x-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24t-4x-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-24t-4x-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-24t-4x-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48p-4g-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48p-4g-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48p-4g-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48p-4g-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48p-4x-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48p-4x-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48p-4x-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48p-4x-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48t-4g-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48t-4g-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48t-4g-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48t-4g-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48t-4x-a	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48t-4x-a:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l-48t-4x-e	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l-48t-4x-e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9300l stack	All versions
CPE cpe:2.3:h:cisco:catalyst_9300l_stack:-:::::::* Remediation No remediation found in references.
cisco catalyst 9400	All versions
CPE cpe:2.3:h:cisco:catalyst_9400:-:::::::* Remediation No remediation found in references.
cisco catalyst 9400 supervisor engine-1	All versions
CPE cpe:2.3:h:cisco:catalyst_9400_supervisor_engine-1:-:::::::* Remediation No remediation found in references.
cisco catalyst 9407r	All versions
CPE cpe:2.3:h:cisco:catalyst_9407r:-:::::::* Remediation No remediation found in references.
cisco catalyst 9410r	All versions
CPE cpe:2.3:h:cisco:catalyst_9410r:-:::::::* Remediation No remediation found in references.
cisco catalyst 9500	All versions
CPE cpe:2.3:h:cisco:catalyst_9500:-:::::::* Remediation No remediation found in references.
cisco catalyst 9800 firmware	17.3 17.5.1
CPE cpe:2.3:o:cisco:catalyst_9800_firmware:17.3:::::::* cpe:2.3:o:cisco:catalyst_9800_firmware:17.5.1:::::::* Remediation No remediation found in references.
cisco catalyst 9800-40	All versions
CPE cpe:2.3:h:cisco:catalyst_9800-40:-:::::::* Remediation No remediation found in references.
cisco catalyst 9800-80	All versions
CPE cpe:2.3:h:cisco:catalyst_9800-80:-:::::::* Remediation No remediation found in references.
cisco catalyst 9800-cl	All versions
CPE cpe:2.3:h:cisco:catalyst_9800-cl:-:::::::* Remediation No remediation found in references.
cisco catalyst 9800-l	All versions
CPE cpe:2.3:h:cisco:catalyst_9800-l:-:::::::* Remediation No remediation found in references.
cisco catalyst 9800-l-c	All versions
CPE cpe:2.3:h:cisco:catalyst_9800-l-c:-:::::::* Remediation No remediation found in references.
cisco catalyst 9800-l-f	All versions
CPE cpe:2.3:h:cisco:catalyst_9800-l-f:-:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Oct 7, 2021	Initial Analysis	[email protected]

CVE-2021-1565 Details

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