{"id":"CVE-2020-11909","aliases":["EUVD-2020-4246","GHSA-m99q-jrwg-59cj"],"status":"published","title":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","description":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.03591,"percentile":0.89581,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191"],"published":"2020-06-17T10:51:09Z","modified":"2026-06-17T02:51:01Z","products":[{"vendor":"treck","product":"tcp\\/ip"}],"references":[{"url":"https://www.kb.cert.org/vuls/id/257161/","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","US Government Resource"]},{"url":"https://www.treck.com","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://jsof-tech.com/vulnerability-disclosure-policy/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://www.kb.cert.org/vuls/id/257161","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred"]},{"url":"https://www.jsof-tech.com/ripple20/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Third Party Advisory"]},{"url":"http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20200625-0006/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11909"},{"url":"https://jsof-tech.com/vulnerability-disclosure-policy"},{"url":"https://security.netapp.com/advisory/ntap-20200625-0006"},{"url":"https://www.jsof-tech.com/ripple20"},{"url":"https://github.com/advisories/GHSA-m99q-jrwg-59cj"}],"sources":{"cve":[{"id":"CVE-2020-11909","description":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","status":"published","published":"2020-06-17T10:51:09Z","modified":"2025-09-30T15:52:16.737Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T14:35:57.352161Z"}],"euvd":[{"id":"EUVD-2020-4246","description":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","status":"published","published":"2020-06-17T10:51:09Z","modified":"2025-09-30T15:52:16Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T20:31:38.096877Z"}],"ghsa":[{"id":"GHSA-m99q-jrwg-59cj","title":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","description":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","status":"published","published":"2022-05-24T17:20:44Z","modified":"2025-09-30T18:31:47Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T15:03:49.069159Z"}],"nvd":[{"id":"CVE-2020-11909","description":"The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.","status":"published","published":"2020-06-17T11:15:10.96Z","modified":"2026-06-17T02:51:01.897Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T14:06:07.249892Z"}]}}