{"id":"CVE-2026-70116","aliases":["EUVD-2026-99687","GHSA-9jc3-pgpm-m2g7"],"status":"published","title":"Windows Resilient File System (ReFS) Security Feature Bypass Vulnerability","description":"Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.","severity":{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0036,"percentile":0.30165,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-10-13T19:00:25Z","modified":"2026-11-10T20:39:33Z","products":[{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"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_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_11_26h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70116","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70116"},{"url":"https://github.com/advisories/GHSA-9jc3-pgpm-m2g7"}],"sources":{"cve":[{"id":"CVE-2026-70116","title":"Windows Resilient File System (ReFS) Security Feature Bypass Vulnerability","description":"Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-10-13T19:00:25.452Z","modified":"2026-11-10T20:39:33.7Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-10T22:18:27.902968Z"}],"euvd":[{"id":"EUVD-2026-99687","description":"Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-10-13T19:00:25Z","modified":"2026-11-10T20:39:33Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:59.037992Z"}],"ghsa":[{"id":"GHSA-9jc3-pgpm-m2g7","title":"Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized...","description":"Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-10-13T21:34:06Z","modified":"2026-10-13T21:34:08Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:13:14.588915Z"}],"nvd":[{"id":"CVE-2026-70116","description":"Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-10-13T19:19:23.713Z","modified":"2026-10-28T17:07:45.96Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}