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CVE-2021-34740 Details

Description

A vulnerability in the WLAN Control Protocol (WCP) implementation for Cisco Aironet Access Point (AP) software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect error handling when an affected device receives an unexpected 802.11 frame. An attacker could exploit this vulnerability by sending certain 802.11 frames over the wireless network to an interface on an affected AP. A successful exploit could allow the attacker to cause a packet buffer leak. This could eventually result in buffer allocation failures, which would trigger a reload of the affected device.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CNA: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL	CVE	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-401	Missing Release of Memory after Effective Lifetime	[email protected]
CWE-401	Missing Release of Memory after Effective Lifetime	[email protected]

Affected Products

Product	Versions
cisco aironet access point software	>= 8.10.0, < 8.10.162.0 17.2 17.3
CPE cpe:2.3:o:cisco:aironet_access_point_software:::::::: cpe:2.3:o:cisco:aironet_access_point_software:17.2:::::::* cpe:2.3:o:cisco:aironet_access_point_software:17.3:::::::* Remediation No remediation found in references.
cisco 1100-4g/6g integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-4g/6g_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-4p integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-8p integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100 integrated services router	All versions
CPE cpe:2.3:h:cisco:1100_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1101-4p integrated services router	All versions
CPE cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1101 integrated services router	All versions
CPE cpe:2.3:h:cisco:1101_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1109-2p integrated services router	All versions
CPE cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1109-4p integrated services router	All versions
CPE cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1109 integrated services router	All versions
CPE cpe:2.3:h:cisco:1109_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1111x-8p integrated services router	All versions
CPE cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1111x integrated services router	All versions
CPE cpe:2.3:h:cisco:1111x_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 111x integrated services router	All versions
CPE cpe:2.3:h:cisco:111x_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1120 integrated services router	All versions
CPE cpe:2.3:h:cisco:1120_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1160 integrated services router	All versions
CPE cpe:2.3:h:cisco:1160_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 6300 series access points	All versions
CPE cpe:2.3:h:cisco:6300_series_access_points:-:::::::* Remediation No remediation found in references.
cisco aironet 1540	All versions
CPE cpe:2.3:h:cisco:aironet_1540:-:::::::* Remediation No remediation found in references.
cisco aironet 1542d	All versions
CPE cpe:2.3:h:cisco:aironet_1542d:-:::::::* Remediation No remediation found in references.
cisco aironet 1542i	All versions
CPE cpe:2.3:h:cisco:aironet_1542i:-:::::::* Remediation No remediation found in references.
cisco aironet 1560	All versions
CPE cpe:2.3:h:cisco:aironet_1560:-:::::::* Remediation No remediation found in references.
cisco aironet 1562d	All versions
CPE cpe:2.3:h:cisco:aironet_1562d:-:::::::* Remediation No remediation found in references.
cisco aironet 1562e	All versions
CPE cpe:2.3:h:cisco:aironet_1562e:-:::::::* Remediation No remediation found in references.
cisco aironet 1562i	All versions
CPE cpe:2.3:h:cisco:aironet_1562i:-:::::::* Remediation No remediation found in references.
cisco aironet 1800	All versions
CPE cpe:2.3:h:cisco:aironet_1800:-:::::::* Remediation No remediation found in references.
cisco aironet 1800i	All versions
CPE cpe:2.3:h:cisco:aironet_1800i:-:::::::* Remediation No remediation found in references.
cisco aironet 1810	All versions
CPE cpe:2.3:h:cisco:aironet_1810:-:::::::* Remediation No remediation found in references.
cisco aironet 1810w	All versions
CPE cpe:2.3:h:cisco:aironet_1810w:-:::::::* Remediation No remediation found in references.
cisco aironet 1815	All versions
CPE cpe:2.3:h:cisco:aironet_1815:-:::::::* Remediation No remediation found in references.
cisco aironet 1815i	All versions
CPE cpe:2.3:h:cisco:aironet_1815i:-:::::::* Remediation No remediation found in references.
cisco aironet 1830	All versions
CPE cpe:2.3:h:cisco:aironet_1830:-:::::::* Remediation No remediation found in references.
cisco aironet 1830e	All versions
CPE cpe:2.3:h:cisco:aironet_1830e:-:::::::* Remediation No remediation found in references.
cisco aironet 1830i	All versions
CPE cpe:2.3:h:cisco:aironet_1830i:-:::::::* Remediation No remediation found in references.
cisco aironet 1840	All versions
CPE cpe:2.3:h:cisco:aironet_1840:-:::::::* Remediation No remediation found in references.
cisco aironet 1850	All versions
CPE cpe:2.3:h:cisco:aironet_1850:-:::::::* Remediation No remediation found in references.
cisco aironet 1850e	All versions
CPE cpe:2.3:h:cisco:aironet_1850e:-:::::::* Remediation No remediation found in references.
cisco aironet 1850i	All versions
CPE cpe:2.3:h:cisco:aironet_1850i:-:::::::* Remediation No remediation found in references.
cisco aironet 2800	All versions
CPE cpe:2.3:h:cisco:aironet_2800:-:::::::* Remediation No remediation found in references.
cisco aironet 2800e	All versions
CPE cpe:2.3:h:cisco:aironet_2800e:-:::::::* Remediation No remediation found in references.
cisco aironet 2800i	All versions
CPE cpe:2.3:h:cisco:aironet_2800i:-:::::::* Remediation No remediation found in references.
cisco aironet 3800	All versions
CPE cpe:2.3:h:cisco:aironet_3800:-:::::::* Remediation No remediation found in references.
cisco aironet 3800e	All versions
CPE cpe:2.3:h:cisco:aironet_3800e:-:::::::* Remediation No remediation found in references.
cisco aironet 3800i	All versions
CPE cpe:2.3:h:cisco:aironet_3800i:-:::::::* Remediation No remediation found in references.
cisco aironet 3800p	All versions
CPE cpe:2.3:h:cisco:aironet_3800p:-:::::::* Remediation No remediation found in references.
cisco aironet 4800	All versions
CPE cpe:2.3:h:cisco:aironet_4800:-:::::::* Remediation No remediation found in references.
cisco catalyst 9100	All versions
CPE cpe:2.3:h:cisco:catalyst_9100:-:::::::* Remediation No remediation found in references.
cisco catalyst 9105	All versions
CPE cpe:2.3:h:cisco:catalyst_9105:-:::::::* Remediation No remediation found in references.
cisco catalyst 9105axi	All versions
CPE cpe:2.3:h:cisco:catalyst_9105axi:-:::::::* Remediation No remediation found in references.
cisco catalyst 9105axw	All versions
CPE cpe:2.3:h:cisco:catalyst_9105axw:-:::::::* Remediation No remediation found in references.
cisco catalyst 9115	All versions
CPE cpe:2.3:h:cisco:catalyst_9115:-:::::::* Remediation No remediation found in references.
cisco catalyst 9115 ap	All versions
CPE cpe:2.3:h:cisco:catalyst_9115_ap:-:::::::* Remediation No remediation found in references.
cisco catalyst 9115axe	All versions
CPE cpe:2.3:h:cisco:catalyst_9115axe:-:::::::* Remediation No remediation found in references.
cisco catalyst 9115axi	All versions
CPE cpe:2.3:h:cisco:catalyst_9115axi:-:::::::* Remediation No remediation found in references.
cisco catalyst 9117	All versions
CPE cpe:2.3:h:cisco:catalyst_9117:-:::::::* Remediation No remediation found in references.
cisco catalyst 9117 ap	All versions
CPE cpe:2.3:h:cisco:catalyst_9117_ap:-:::::::* Remediation No remediation found in references.
cisco catalyst 9117axi	All versions
CPE cpe:2.3:h:cisco:catalyst_9117axi:-:::::::* Remediation No remediation found in references.
cisco catalyst 9120	All versions
CPE cpe:2.3:h:cisco:catalyst_9120:-:::::::* Remediation No remediation found in references.
cisco catalyst 9120 ap	All versions
CPE cpe:2.3:h:cisco:catalyst_9120_ap:-:::::::* Remediation No remediation found in references.
cisco catalyst 9120axe	All versions
CPE cpe:2.3:h:cisco:catalyst_9120axe:-:::::::* Remediation No remediation found in references.
cisco catalyst 9120axi	All versions
CPE cpe:2.3:h:cisco:catalyst_9120axi:-:::::::* Remediation No remediation found in references.
cisco catalyst 9120axp	All versions
CPE cpe:2.3:h:cisco:catalyst_9120axp:-:::::::* Remediation No remediation found in references.
cisco catalyst 9124	All versions
CPE cpe:2.3:h:cisco:catalyst_9124:-:::::::* Remediation No remediation found in references.
cisco catalyst 9124axd	All versions
CPE cpe:2.3:h:cisco:catalyst_9124axd:-:::::::* Remediation No remediation found in references.
cisco catalyst 9124axi	All versions
CPE cpe:2.3:h:cisco:catalyst_9124axi:-:::::::* Remediation No remediation found in references.
cisco catalyst 9130	All versions
CPE cpe:2.3:h:cisco:catalyst_9130:-:::::::* Remediation No remediation found in references.
cisco catalyst 9130 ap	All versions
CPE cpe:2.3:h:cisco:catalyst_9130_ap:-:::::::* Remediation No remediation found in references.
cisco catalyst 9130axe	All versions
CPE cpe:2.3:h:cisco:catalyst_9130axe:-:::::::* Remediation No remediation found in references.
cisco catalyst 9130axi	All versions
CPE cpe:2.3:h:cisco:catalyst_9130axi:-:::::::* Remediation No remediation found in references.
cisco catalyst iw6300	All versions
CPE cpe:2.3:h:cisco:catalyst_iw6300:-:::::::* Remediation No remediation found in references.
cisco catalyst iw6300 ac	All versions
CPE cpe:2.3:h:cisco:catalyst_iw6300_ac:-:::::::* Remediation No remediation found in references.
cisco catalyst iw6300 dc	All versions
CPE cpe:2.3:h:cisco:catalyst_iw6300_dc:-:::::::* Remediation No remediation found in references.
cisco catalyst iw6300 dcw	All versions
CPE cpe:2.3:h:cisco:catalyst_iw6300_dcw:-:::::::* Remediation No remediation found in references.

Change History

20 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
Oct 14, 2021	Initial Analysis	[email protected]

CVE-2021-34740 Details

Description

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