Is CVE-2023-20268 being actively exploited?

CVE-2023-20268 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2023-20268?

CVE-2023-20268 has a CVSS 3.1 base score of 4.7 (MEDIUM).

CVE-2023-20268

MEDIUM · CVSS 4.7EPSS 0.3%EU EUVD

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.

Key facts

CVSS score: 4.7 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Weakness (CWE): CWE-400
EPSS score: 0.3% (17th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2023-24447)
Published: September 27, 2023
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2023-24447 in the EU Vulnerability Database. Last updated in EUVD on December 12, 2024.

View on the EU Vulnerability Database

Affected products

cisco / business 150ax
cisco / business 150ax firmware
cisco / business 151axm
cisco / business 151axm firmware
cisco / catalyst 9800 embedded wireless controller
cisco / catalyst 9800 embedded wireless controller firmware
cisco / wireless lan controller software

Certified products that may be affected

3 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Cisco 5508 Wireless LAN Controller - Cisco Systems, Inc. - FIPS 140 2065 - historical
Cisco 5508 Wireless LAN Controller - Cisco Systems, Inc. - FIPS 140 1829 - historical
Cisco 5508 Wireless LAN Controller - Cisco Systems, Inc. - FIPS 140 1447 - historical

References

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

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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