{"id":"CVE-2022-22047","aliases":["EUVD-2022-27201","GHSA-p4j8-4hv2-8733"],"status":"published","title":"Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability","description":"Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/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":0.18765,"percentile":0.97297,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-426"],"published":"2022-07-12T22:37:16Z","modified":"2026-06-17T04:27:33Z","kev":{"date_added":"2022-07-12","due_date":"2022-08-02","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2022-07-12"},{"source":"kev","since":"2022-07-12"}],"products":[{"vendor":"microsoft","product":"windows"},{"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 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 7"},{"vendor":"microsoft","product":"windows 7 service pack 1"},{"vendor":"microsoft","product":"windows 8.1"},{"vendor":"microsoft","product":"windows server 2008  service pack 2"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1 (server core 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Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-22047","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-22047"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-22047"},{"url":"https://github.com/advisories/GHSA-p4j8-4hv2-8733"}],"sources":{"cve":[{"id":"CVE-2022-22047","title":"Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability","description":"Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability","status":"published","published":"2022-07-12T22:37:16Z","modified":"2025-10-21T23:15:38.451Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-426"],"updated_at":"2026-11-02T14:34:26.645563Z"}],"euvd":[{"id":"EUVD-2022-27201","description":"Windows Client Server Run-time Subsystem 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