{"id":"CVE-2025-62456","aliases":["EUVD-2025-202254","GHSA-qrrp-v5pw-7w99"],"status":"published","title":"Windows Resilient File System (ReFS) Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/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":"2026-11-12","score":0.01185,"percentile":0.68263,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2025-12-09T17:55:33Z","modified":"2026-10-07T11:10:00Z","products":[{"vendor":"microsoft","product":"windows 11 version 22h3"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62456","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62456"},{"url":"https://github.com/advisories/GHSA-qrrp-v5pw-7w99"}],"sources":{"cve":[{"id":"CVE-2025-62456","title":"Windows Resilient File System (ReFS) Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","status":"published","published":"2025-12-09T17:55:33.275Z","modified":"2026-04-16T14:18:20.423Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/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-122"],"updated_at":"2026-11-02T14:32:55.19484Z"}],"euvd":[{"id":"EUVD-2025-202254","description":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","status":"published","published":"2025-12-09T17:55:33Z","modified":"2026-04-16T14:18:20Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T19:24:24.386229Z"}],"ghsa":[{"id":"GHSA-qrrp-v5pw-7w99","title":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker...","description":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","status":"published","published":"2025-12-09T18:30:46Z","modified":"2025-12-09T18:30:52Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:05:06.989368Z"}],"nvd":[{"id":"CVE-2025-62456","description":"Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.","status":"published","published":"2025-12-09T18:15:57.143Z","modified":"2026-10-07T11:10:00.153Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:11:49.468427Z"}]}}