CVE-2023-20268: Cisco Business 150ax Firmware

Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Cisco Business 150ax Firmware: before 10.6.2.0 (fixed in 10.6.2.0)
• Cisco Business 151axm Firmware: before 10.6.2.0 (fixed in 10.6.2.0)
• Cisco Catalyst 9800 Embedded Wireless Controller Firmware: before 17.3.8 (fixed in 17.3.8); from 17.4.0, before 17.6.6 (fixed in 17.6.6); from 17.8.0, before 17.9.4 (fixed in 17.9.4)
• Cisco Wireless Lan Controller Software: before 8.10.190.0 (fixed in 8.10.190.0)

Published 2023-09-27. Last modified 2026-06-17.