{"schemaVersion":3,"id":"CVE-2020-3172","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a denial of service (DoS) condition on an affected device. The vulnerability exists because of insufficiently validated Cisco Discovery Protocol packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2-adjacent affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code as root or cause a DoS condition on the affected device. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Note: This vulnerability is different from the following Cisco FXOS and NX-OS Software Cisco Discovery Protocol vulnerabilities that Cisco announced on Feb. 5, 2020: Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability and Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability.","dates":{"published":"2020-02-26T16:50:40.700Z","modified":"2024-11-15T17:38:15.493Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":8.3,"severity":"high","vector":"AV:A/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01894,"percentile":0.79296,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01894},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01894,"percentile":0.79296}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01894,"percentile":null},{"date":"2026-10-0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