CVE-2024-20271: Cisco Business Access Points

High severity, CVSS 8.6. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability in the IP packet processing of Cisco Access Point (AP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of certain IPv4 packets. An attacker could exploit this vulnerability by sending a crafted IPv4 packet either to or through an affected device. A successful exploit could allow the attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To successfully exploit this vulnerability, the attacker does not need to be associated with the affected AP. This vulnerability cannot be exploited by sending IPv6 packets.

Affected products

• Cisco Business Access Points: before 10.9.1.0 (fixed in 10.9.1.0); before 10.6.2.0 (fixed in 10.6.2.0)
• Cisco IOS XE: before 17.3.8 (fixed in 17.3.8); from 17.4, before 17.6.6 (fixed in 17.6.6); from 17.7, before 17.9.5 (fixed in 17.9.5); from 17.10, before 17.12.2 (fixed in 17.12.2)
• Cisco Wireless Lan Controller Software: before 8.10.190.0 (fixed in 8.10.190.0)

Published 2024-03-27. Last modified 2026-06-17.