{"schemaVersion":3,"id":"CVE-2019-1951","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in the packet filtering features of Cisco SD-WAN Solution could allow an unauthenticated, remote attacker to bypass L3 and L4 traffic filters. The vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by crafting a malicious TCP packet with specific characteristics and sending it to a target device. A successful exploit could allow the attacker to bypass the L3 and L4 traffic filters and inject an arbitrary packet in the network.","dates":{"published":"2019-08-08T07:25:19.682Z","modified":"2024-11-19T19:01:44.799Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.8,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":5.8,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.8,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01455,"percentile":0.73232,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01455},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01455,"percentile":0.73232}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01455,"percentile":null},{"date":"2026-10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