{"id":"CVE-2024-20271","title":"Cisco Access Point Software Denial of Service Vulnerability (CVE-2024-20271)","summary":"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.\r\n\r\nThis vulnerability is due to insufficien…","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","cvssSource":"vendor","vendor":"Cisco","product":"Cisco Aironet Access Point Software","affected":["aironet_access_point_software","business_wireless_access_point_software","aironet_access_point_software_ios_xe_controller"],"published":"2024-03-27","updated":"2024-03-27","sourceUpdated":"2024-03-27T16:00:00+00:00","source":"CSAF","sourceUrl":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-h9TGGX6W","references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-h9TGGX6W"},{"url":"https://software.cisco.com"}],"tags":["csaf","vendor-advisory","cisco"],"epss":0.00633,"epssPercentile":0.48647,"ingestedAt":"2026-09-08T15:58:18.543Z","slug":"CVE-2024-20271","body":"## Overview\n\nA 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.\r\n\r\nThis 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.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\n\n## Vendor advisories\n\n- **cisco-sa-ap-dos-h9TGGX6W** · Cisco · affected: Cisco Aironet Access Point Software, Cisco Business Wireless Access Point Software, Cisco Aironet Access Point Software (IOS XE Controller) · updated 2024-03-27 · [advisory](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-h9TGGX6W)\n\n**Cisco Access Point Software Denial of Service Vulnerability**. Released 2024-03-27.\n\nAffected:\n\n- Cisco Aironet Access Point Software\n- Cisco Business Wireless Access Point Software\n- Cisco Aironet Access Point Software (IOS XE Controller)\n\n## Remediation\n\nCisco has released software updates that address this vulnerability. https://software.cisco.com","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}