{"schemaVersion":3,"id":"CVE-2020-17441","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6 payload length field is equal to the actual size of the payload, which leads to an Out-of-Bounds read during the ICMPv6 checksum calculation, resulting in either Denial-of-Service or Information Disclosure. This affects pico_ipv6_extension_headers and pico_checksum_adder (in pico_ipv6.c and pico_frame.c).","dates":{"published":"2020-12-11T22:29:35.000Z","modified":"2024-08-04T13:53:17.412Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.1,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.1,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.4,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.07002,"percentile":0.94138,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.07002},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.07002,"percentile":0.94138}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.07002,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.07002,"pe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3.7.0","eol":null,"hubHref":"/vendor/microchip/mplab_harmony"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.kb.cert.org/vuls/id/815128","label":"www.kb.cert.org/vuls/id/815128","hostname":"www.kb.cert.org","tags":["X Refsource MISC","Third Party Advisory","US Government Resource"]},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01","label":"us-cert.cisa.gov/ics/advisories/icsa-20-343-01","hostname":"us-cert.cisa.gov","tags":["X Refsource MISC","Third Party Advisory","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-12-11T22:29:35.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T13:53:17.412Z","label":"Last modified","detail":"Vulnerability information 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