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CVE-2023-20202 Details

Description

A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of network requests to an affected device. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to reload, resulting in a DoS condition.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:A/AC:H/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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-wncd-HFGMsfSD	CVE	Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-wncd-HFGMsfSD	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-noinfo	Insufficient Information to Classify Weakness	[email protected]
CWE-789	Memory Allocation with Excessive Size Value	[email protected]

Affected Products

Product	Versions
cisco ios xe	17.9.1 17.9.1a 17.9.1w 17.9.1x 17.9.1x1
CPE cpe:2.3:o:cisco:ios_xe:17.9.1:::::::* cpe:2.3:o:cisco:ios_xe:17.9.1a:::::::* cpe:2.3:o:cisco:ios_xe:17.9.1w:::::::* cpe:2.3:o:cisco:ios_xe:17.9.1x:::::::* cpe:2.3:o:cisco:ios_xe:17.9.1x1:::::::* cpe:2.3:o:cisco:ios_xe:17.9.1y:::::::* cpe:2.3:o:cisco:ios_xe:17.9.2:::::::* cpe:2.3:o:cisco:ios_xe:17.9.2a:::::::* cpe:2.3:o:cisco:ios_xe:17.9.2b:::::::* cpe:2.3:o:cisco:ios_xe:17.10.1:::::::* cpe:2.3:o:cisco:ios_xe:17.10.1a:::::::* cpe:2.3:o:cisco:ios_xe:17.10.1b:::::::* Remediation No remediation found in references.
cisco catalyst 9105i	All versions
CPE cpe:2.3:h:cisco:catalyst_9105i:-:::::::* Remediation No remediation found in references.
cisco catalyst 9105w	All versions
CPE cpe:2.3:h:cisco:catalyst_9105w:-:::::::* 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 9120	All versions
CPE cpe:2.3:h:cisco:catalyst_9120:-:::::::* Remediation No remediation found in references.
cisco catalyst 9124d	All versions
CPE cpe:2.3:h:cisco:catalyst_9124d:-:::::::* Remediation No remediation found in references.
cisco catalyst 9124e	All versions
CPE cpe:2.3:h:cisco:catalyst_9124e:-:::::::* Remediation No remediation found in references.
cisco catalyst 9124i	All versions
CPE cpe:2.3:h:cisco:catalyst_9124i:-:::::::* 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 9136	All versions
CPE cpe:2.3:h:cisco:catalyst_9136:-:::::::* Remediation No remediation found in references.
cisco catalyst 9162	All versions
CPE cpe:2.3:h:cisco:catalyst_9162:-:::::::* Remediation No remediation found in references.
cisco catalyst 9164	All versions
CPE cpe:2.3:h:cisco:catalyst_9164:-:::::::* Remediation No remediation found in references.
cisco catalyst 9166	All versions
CPE cpe:2.3:h:cisco:catalyst_9166:-:::::::* Remediation No remediation found in references.
cisco catalyst 9166d1	All versions
CPE cpe:2.3:h:cisco:catalyst_9166d1:-:::::::* 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 iw6300	All versions
CPE cpe:2.3:h:cisco:catalyst_iw6300:-:::::::* Remediation No remediation found in references.
cisco esw6300	All versions
CPE cpe:2.3:h:cisco:esw6300:-:::::::* Remediation No remediation found in references.
cisco iw9167eh-x-ap	All versions
CPE cpe:2.3:h:cisco:iw9167eh-x-ap:-:::::::* Remediation No remediation found in references.
cisco iw9167eh-x-urwb	All versions
CPE cpe:2.3:h:cisco:iw9167eh-x-urwb:-:::::::* Remediation No remediation found in references.
cisco iw9167eh-x-wgb	All versions
CPE cpe:2.3:h:cisco:iw9167eh-x-wgb:-:::::::* Remediation No remediation found in references.
cisco iw9167ih-x-ap	All versions
CPE cpe:2.3:h:cisco:iw9167ih-x-ap:-:::::::* 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]
Jan 25, 2024	CVE Modified	[email protected]
Oct 6, 2023	Initial Analysis	[email protected]

CVE-2023-20202 Details

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