{"id":"CVE-2022-20766","aliases":["EUVD-2022-26016","GHSA-7q63-79xq-2jj4"],"status":"published","title":"Cisco ATA 190 Series Analog Telephone Adapter firmware Cisco Discovery Protocol Denial of Service Vulnerability","description":"A vulnerability in the Cisco\u0026nbsp;Discovery Protocol functionality of Cisco\u0026nbsp;ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\nThis vulnerability is due to an out-of-bounds read when processing Cisco\u0026nbsp;Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco\u0026nbsp;Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a service restart.Cisco\u0026nbsp;has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00859,"percentile":0.58734,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2024-11-15T15:35:42Z","modified":"2026-06-17T04:25:02Z","products":[{"vendor":"cisco","product":"ata_190_firmware"},{"vendor":"cisco","product":"cisco analog telephone adaptor (ata) software"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-GEZYVvs"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-20766"},{"url":"https://github.com/advisories/GHSA-7q63-79xq-2jj4"}],"sources":{"cve":[{"id":"CVE-2022-20766","title":"Cisco ATA 190 Series Analog Telephone Adapter firmware Cisco Discovery Protocol Denial of Service Vulnerability","description":"A vulnerability in the Cisco\u0026nbsp;Discovery Protocol functionality of Cisco\u0026nbsp;ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\nThis vulnerability is due to an out-of-bounds read when processing Cisco\u0026nbsp;Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco\u0026nbsp;Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a service restart.Cisco\u0026nbsp;has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T15:35:42.433Z","modified":"2024-11-15T21:07:11.5Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:34:24.971323Z"}],"euvd":[{"id":"EUVD-2022-26016","description":"A vulnerability in the Cisco\u0026nbsp;Discovery Protocol functionality of Cisco\u0026nbsp;ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\nThis vulnerability is due to an out-of-bounds read when processing Cisco\u0026nbsp;Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco\u0026nbsp;Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a service restart.Cisco\u0026nbsp;has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T15:35:42Z","modified":"2024-11-15T21:07:11Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:04:57.661321Z"}],"ghsa":[{"id":"GHSA-7q63-79xq-2jj4","title":"A vulnerability in the Cisco\u0026nbsp;Discovery Protocol functionality of Cisco\u0026nbsp;ATA 190 Series...","description":"A vulnerability in the Cisco\u0026nbsp;Discovery Protocol functionality of Cisco\u0026nbsp;ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\nThis vulnerability is due to an out-of-bounds read when processing Cisco\u0026nbsp;Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco\u0026nbsp;Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a service restart.Cisco\u0026nbsp;has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T18:30:49Z","modified":"2024-11-15T18:30:58Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:58:51.371243Z"}],"nvd":[{"id":"CVE-2022-20766","description":"A vulnerability in the Cisco\u0026nbsp;Discovery Protocol functionality of Cisco\u0026nbsp;ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.\r\nThis vulnerability is due to an out-of-bounds read when processing Cisco\u0026nbsp;Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco\u0026nbsp;Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a service restart.Cisco\u0026nbsp;has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T16:15:22.133Z","modified":"2026-06-17T04:25:02.857Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:07:40.977475Z"}]}}