← Vulnerability feed

Vulnerability record · CVE-2023-20268 · published 27 September 2023

CVE-2023-20268: Cisco wireless lan controller software uncontrolled resource consumption vulnerability

Cisco · Wireless Lan Controller Software

A vulnerability in the packet processing functionality of Cisco access point (AP) software could allow an unauthenticated, adjacent attacker to exhaust resources on an affected device.  This vulnerability is due to insufficient management of resources when handling certain types of traffic. An attacker could exploit this vulnerability by sending a series of specific wireless packets to an affected device. A successful exploit could allow the attacker to consume resources on an affected device. A sustained attack could lead to the disruption of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel and intermittent loss of wireless client traffic.

4.7 CVSS 3.1 Medium EPSS 0.26% · top 83.3% CWE-400 · Uncontrolled resource consumption
4.7CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the packet processing functionality of Cisco access point (AP) software could allow an unauthenticated, adjacent attacker to exhaust resources on an affected device.  This vulnerability is due to insufficient management of resources when handling certain types of traffic. An attacker could exploit this vulnerability by sending a series of specific wireless packets to an affected device. A successful exploit could allow the attacker to consume resources on an affected device. A sustained attack could lead to the disruption of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel and intermittent loss of wireless client traffic.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-capwap-DDMCZS4m Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-capwap-DDMCZS4m Vendor Advisory

Track CVE-2023-20268 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2014-0703Cisco wireless lan controller software race condition vulnerabilityCisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition in the status of the administr…EPSS 2.0%10.0CVE-2007-2036Cisco wireless lan controller software vulnerabilityThe SNMP implementation in the Cisco Wireless LAN Controller (WLC) before 20070419 uses the default read-only community public, and the default read-…EPSS 2.6%9.8CVE-2016-1363Cisco wireless lan controller software vulnerabilityBuffer overflow in the redirection functionality in Cisco Wireless LAN Controller (WLC) Software 7.2 through 7.4 before 7.4.140.0(MD) and 7.5 through…EPSS 5.6%9.8CVE-2015-6314Cisco wireless lan controller software improper authentication vulnerabilityCisco Wireless LAN Controller (WLC) devices with software 7.6.x, 8.0 before 8.0.121.0, and 8.1 before 8.1.131.0 allow remote attackers to change conf…EPSS 3.0%9.3CVE-2012-0371Cisco wireless lan controller software permissions and access controls vulnerabilityCisco Wireless LAN Controller (WLC) devices with software 4.x, 5.x, 6.0, and 7.0 before 7.0.220.4, when CPU-based ACLs are enabled, allow remote atta…EPSS 1.8%9.0CVE-2013-1105Cisco wireless lan controller software permissions and access controls vulnerabilityCisco Wireless LAN Controller (WLC) devices with software 7.0 before 7.0.235.3, 7.1 and 7.2 before 7.2.111.3, and 7.3 before 7.3.101.0 allow remote a…EPSS 3.1%9.0CVE-2013-1104Cisco 2000 wireless lan controller vulnerabilityThe HTTP Profiling functionality on Cisco Wireless LAN Controller (WLC) devices with software 7.3.101.0 allows remote authenticated users to execute …EPSS 3.7%9.0CVE-2010-3033Cisco wireless lan controller software permissions and access controls vulnerabilityCisco Wireless LAN Controller (WLC) software, possibly 4.2 through 6.0, allows remote authenticated users to bypass intended access restrictions and …EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2023-20268), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.