{"id":"CVE-2025-21183","aliases":["EUVD-2025-2262","GHSA-c228-pg9x-pq8r"],"status":"published","title":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","description":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00529,"percentile":0.45236,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2025-02-11T17:58:16Z","modified":"2026-06-17T08:42:43Z","products":[{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21183","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21183"},{"url":"https://github.com/advisories/GHSA-c228-pg9x-pq8r"}],"sources":{"cve":[{"id":"CVE-2025-21183","title":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","description":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","status":"published","published":"2025-02-11T17:58:16.597Z","modified":"2026-02-26T19:09:05.249Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:32:32.702673Z"}],"euvd":[{"id":"EUVD-2025-2262","description":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","status":"published","published":"2025-02-11T17:58:16Z","modified":"2026-02-26T19:09:05Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T19:48:15.753271Z"}],"ghsa":[{"id":"GHSA-c228-pg9x-pq8r","title":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","description":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","status":"published","published":"2025-02-11T18:31:36Z","modified":"2025-02-11T18:31:43Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:59:53.226964Z"}],"nvd":[{"id":"CVE-2025-21183","description":"Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability","status":"published","published":"2025-02-11T18:15:29.993Z","modified":"2026-06-17T08:42:43.257Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:10:50.916773Z"}]}}