{"id":"CVE-2021-1669","aliases":["EUVD-2021-7136","GHSA-cj6v-pvfq-h7pp"],"status":"published","title":"Windows Remote Desktop Security Feature Bypass Vulnerability","description":"Windows Remote Desktop Security Feature Bypass Vulnerability","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.03204,"percentile":0.88238,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-01-12T19:42:15Z","modified":"2026-06-17T03:32:17Z","products":[{"vendor":"microsoft","product":"microsoft remote desktop for ios"},{"vendor":"microsoft","product":"microsoft remote desktop for mac"},{"vendor":"microsoft","product":"remote desktop client for windows desktop"},{"vendor":"microsoft","product":"remote_desktop"},{"vendor":"microsoft","product":"remote_desktop_client"},{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1803"},{"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 server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1669","tags":["vendor-advisory"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1669","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1669"},{"url":"https://github.com/advisories/GHSA-cj6v-pvfq-h7pp"}],"sources":{"cve":[{"id":"CVE-2021-1669","title":"Windows Remote Desktop Security Feature Bypass Vulnerability","description":"Windows Remote Desktop Security Feature Bypass Vulnerability","status":"published","published":"2021-01-12T19:42:15Z","modified":"2024-11-19T15:12:18.855Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-7136","description":"Windows Remote Desktop Security Feature Bypass Vulnerability","status":"published","published":"2021-01-12T19:42:15Z","modified":"2024-11-19T15:12:18Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:04:56.132572Z"}],"ghsa":[{"id":"GHSA-cj6v-pvfq-h7pp","title":"Windows Remote Desktop Security Feature Bypass Vulnerability","description":"Windows Remote Desktop Security Feature Bypass Vulnerability","status":"published","published":"2022-05-24T17:38:45Z","modified":"2024-10-08T18:32:59Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:58:26.306971Z"}],"nvd":[{"id":"CVE-2021-1669","description":"Windows Remote Desktop Security Feature Bypass Vulnerability","status":"published","published":"2021-01-12T20:15:32.04Z","modified":"2026-06-17T03:32:17.553Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:49.284888Z"}]}}