{"id":"CVE-2019-1826","aliases":["EUVD-2019-10383","GHSA-72jx-gchv-4v87"],"status":"published","title":"Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability","description":"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.","severity":{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00559,"percentile":0.46809,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2019-04-18T01:15:30Z","modified":"2026-06-17T02:29:23Z","products":[{"vendor":"cisco","product":"aironet_access_point_firmware"},{"vendor":"cisco","product":"cisco aironet access point software"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aap-dos","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/107988","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1826"},{"url":"https://github.com/advisories/GHSA-72jx-gchv-4v87"}],"sources":{"cve":[{"id":"CVE-2019-1826","title":"Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability","description":"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.","status":"published","published":"2019-04-18T01:15:30.005Z","modified":"2024-11-21T19:37:11.848Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:20:26.034547Z"}],"euvd":[{"id":"EUVD-2019-10383","description":"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.","status":"published","published":"2019-04-18T01:15:30Z","modified":"2024-11-21T19:37:11Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:04:51.735192Z"}],"ghsa":[{"id":"GHSA-72jx-gchv-4v87","title":"A vulnerability in the quality of service (QoS) feature of Cisco Aironet Series Access Points ...","description":"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.","status":"published","published":"2022-05-13T01:31:20Z","modified":"2023-02-01T05:08:20Z","cvss":[{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:50:44.010322Z"}],"nvd":[{"id":"CVE-2019-1826","description":"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.","status":"published","published":"2019-04-18T02:29:05.467Z","modified":"2026-06-17T02:29:23.867Z","cvss":[{"version":"3.0","score":6.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:A/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:05:11.426883Z"}]}}