CVE-2019-1826: Cisco Aironet Access Point Firmware

Medium severity, CVSS 5.7. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability in the quality of service (QoS) feature of Cisco Aironet Series Access Points (APs) could allow an authenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation on QoS fields within Wi-Fi frames by the affected device. An attacker could exploit this vulnerability by sending malformed Wi-Fi frames to an affected device. A successful exploit could allow the attacker to cause the affected device to crash, resulting in a DoS condition.

Affected products

• Cisco Aironet Access Point Firmware: affected versions not specified; version 8.5(131.3) only

Published 2019-04-18. Last modified 2026-06-17.