{"cve":"CVE-2019-1826","nvd":{"published":"2019-04-18T02:29:05.467","modified":"2026-06-17T02:29:23.867","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.7},"cwes":["CWE-20"],"references":["http://www.securityfocus.com/bid/107988","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aap-dos","http://www.securityfocus.com/bid/107988","https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aap-dos"],"products":["cisco:aironet_access_point_firmware"],"source":"nvd","synced_at":"2026-10-19T20:56:19.218283075+00:00"},"epss":{"cve":"CVE-2019-1826","score":0.00559,"percentile":0.46571,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}