{"id":"CVE-2021-31970","aliases":["EUVD-2021-18842","GHSA-jc6g-whc6-qfj3"],"status":"published","title":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","description":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00852,"percentile":0.58573,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2021-06-08T22:46:34Z","modified":"2026-06-17T03:52:36Z","products":[{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows 10 version 20h2"},{"vendor":"microsoft","product":"windows 10 version 21h1"},{"vendor":"microsoft","product":"windows 8.1"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31970","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/163256/Microsoft-Windows-Filtering-Platform-Token-Access-Check-Privilege-Escalation.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31970"},{"url":"https://github.com/advisories/GHSA-jc6g-whc6-qfj3"}],"sources":{"cve":[{"id":"CVE-2021-31970","title":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","description":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","status":"published","published":"2021-06-08T22:46:34Z","modified":"2024-08-03T23:10:31.467Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-18842","description":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","status":"published","published":"2021-06-08T22:46:34Z","modified":"2024-08-03T23:10:31Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T03:24:37.407491Z"}],"ghsa":[{"id":"GHSA-jc6g-whc6-qfj3","title":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","description":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","status":"published","published":"2022-05-24T19:04:46Z","modified":"2024-07-03T18:32:29Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:57:33.266743Z"}],"nvd":[{"id":"CVE-2021-31970","description":"Windows TCP/IP Driver Security Feature Bypass Vulnerability","status":"published","published":"2021-06-08T23:15:09.183Z","modified":"2026-06-17T03:52:36.03Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}