{"id":"CVE-2021-38666","aliases":["EUVD-2021-25105","GHSA-vcc7-rh26-62x2"],"status":"published","title":"Remote Desktop Client Remote Code Execution Vulnerability","description":"Remote Desktop Client Remote Code Execution Vulnerability","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.15184,"percentile":0.96776,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2021-11-10T00:46:29Z","modified":"2026-08-19T18:31:37Z","exploits":[{"source":"pocgithub","id":"DarkSprings/CVE-2021-38666-poc","title":"DarkSprings/CVE-2021-38666-poc","date":"2021-11-12","url":"https://github.com/DarkSprings/CVE-2021-38666-poc"}],"products":[{"vendor":"microsoft","product":"remote desktop client for windows desktop"},{"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 11 version 21h2"},{"vendor":"microsoft","product":"windows 7"},{"vendor":"microsoft","product":"windows 7 service pack 1"},{"vendor":"microsoft","product":"windows 8.1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1 (server core installation)"},{"vendor":"microsoft","product":"windows server 2008 service pack 2"},{"vendor":"microsoft","product":"windows server 2008 service pack 2 (server core installation)"},{"vendor":"microsoft","product":"windows server 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Remote Code Execution Vulnerability","description":"Remote Desktop Client Remote Code Execution Vulnerability","status":"published","published":"2021-11-10T00:46:29Z","modified":"2026-08-19T16:27:11.207Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-25105","description":"Remote Desktop Client Remote Code Execution Vulnerability","status":"published","published":"2021-11-10T00:46:29Z","modified":"2026-08-19T16:27:11Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:01:43.218519Z"}],"ghsa":[{"id":"GHSA-vcc7-rh26-62x2","title":"Remote Desktop Client Remote Code Execution Vulnerability","description":"Remote Desktop Client Remote Code Execution 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