What’s Vulnerable › Vulnerabilities

CVE-2019-15264: Cisco Aironet Access Points and Catalyst 9100 Access Points CAPWAP Denial of Service Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-16 · updated 2026-06-17
• Weakness: CWE-400

Description

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol implementation of Cisco Aironet and Catalyst 9100 Access Points (APs) could allow an unauthenticated, adjacent attacker to cause an affected device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to improper resource management during CAPWAP message processing. An attacker could exploit this vulnerability by sending a high volume of legitimate wireless management frames within a short time to an affected device. A successful exploit could allow the attacker to cause a device to restart unexpectedly, resulting in a DoS condition for clients associated with the AP.

Affected products

• Cisco Aironet 1540 Firmware: all versions
• Cisco Aironet 1560 Firmware: all versions
• Cisco Aironet 1850 Firmware: 8.9(1.249), 8.9(1.255), 8.9(4.28), 8.9(4.41), 8.9(4.49), 8.9(4.55) (+4)
• Cisco Aironet 2800 Firmware: all versions
• Cisco Aironet 3800 Series Access Points: all versions
• Cisco Aironet 4800 Firmware: all versions
• Cisco Catalyst 9100 Firmware: all versions

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-airo-capwap-dos
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-airo-capwap-dos

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