{"id":"CVE-2022-22049","aliases":["EUVD-2022-27203","GHSA-8gv9-w486-3g6c"],"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":"2026-11-10","score":0.01056,"percentile":0.64712,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2022-07-12T22:37:19Z","modified":"2026-06-17T04:27:34Z","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 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 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 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 2022"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_11"},{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22049","tags":["vendor-advisory","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-22049"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-22049"},{"url":"http://packetstormsecurity.com/files/168069/Windows-sxssrv-BaseSrvActivationContextCacheDuplicateUnicodeString-Heap-Buffer-Overflow.html"},{"url":"https://github.com/advisories/GHSA-8gv9-w486-3g6c"}],"sources":{"cve":[{"id":"CVE-2022-22049","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":"2022-07-12T22:37:19Z","modified":"2025-07-08T15:36:24.395Z","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-787"],"updated_at":"2026-11-02T14:34:26.645563Z"}],"euvd":[{"id":"EUVD-2022-27203","description":"Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability","status":"published","published":"2022-07-12T22:37:19Z","modified":"2025-07-08T15:36:24Z","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"}],"updated_at":"2026-11-02T20:32:12.052108Z"}],"ghsa":[{"id":"GHSA-8gv9-w486-3g6c","title":"Windows CSRSS Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-22026,...","description":"Windows CSRSS Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-22026, CVE-2022-22047.","status":"published","published":"2022-07-13T00:00:39Z","modified":"2023-05-17T18:30:20Z","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","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:54:35.559556Z"}],"nvd":[{"id":"CVE-2022-22049","description":"Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability","status":"published","published":"2022-07-12T23:15:10.683Z","modified":"2026-06-17T04:27:34.283Z","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","level":"high","assessor":"secondary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:23.322724Z"}]}}