{"id":"CVE-2022-21907","aliases":["EUVD-2022-27063","GHSA-cgqq-62rg-6vmf"],"status":"published","title":"HTTP Protocol Stack Remote Code Execution Vulnerability","description":"HTTP Protocol Stack Remote Code Execution Vulnerability","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.9279,"percentile":0.9983,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2022-01-11T20:23:09Z","modified":"2026-06-17T04:27:15Z","exploits":[{"source":"exploitdb","id":"EDB-51575","title":"Windows 10 v21H1 - HTTP Protocol Stack Remote Code 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10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 20h2"},{"vendor":"microsoft","product":"windows 10 version 21h1"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 11 version 21h2"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_11"},{"vendor":"microsoft","product":"windows_server"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21907","tags":["vendor-advisory"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21907","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://packetstormsecurity.com/files/166730/Microsoft-HTTP-Protocol-Stack-Denial-Of-Service.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21907"},{"url":"https://github.com/nu11secur1ty/Windows10Exploits/tree/master/2022/CVE-2022-21907"},{"url":"https://www.nu11secur1ty.com/2022/01/cve-2022-21907.html"},{"url":"http://packetstormsecurity.com/files/165566/HTTP-Protocol-Stack-Denial-Of-Service-Remote-Code-Execution.html"},{"url":"https://github.com/advisories/GHSA-cgqq-62rg-6vmf"}],"sources":{"cve":[{"id":"CVE-2022-21907","title":"HTTP 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