{"id":"CVE-2026-70116","aliases":[],"title":"Windows Resilient File System (ReFS) Security Feature Bypass Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"vendor":"Microsoft","name":"Windows 11 Version 24H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.9711","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"},{"vendor":"Microsoft","name":"Windows 11 Version 25H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26200.0","status":"affected","lessThan":"10.0.26200.9711","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"},{"vendor":"Microsoft","name":"Windows 11 version 26H1","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.28000.0","status":"affected","lessThan":"10.0.28000.3231","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"},{"vendor":"Microsoft","name":"Windows 11 Version 26H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26300.0","status":"affected","lessThan":"10.0.26300.9711","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"},{"vendor":"Microsoft","name":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33650","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"},{"vendor":"Microsoft","name":"Windows Server 2025 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33650","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"}],"remediation":[],"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attack.","severity":"medium","score":4.2,"published":"2026-10-13T19:00:25.452Z","modified":"2026-10-28T18:15:04.096Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70116"],"sources":[{"name":"CVE","id":"CVE-2026-70116","modified":"2026-10-28T18:15:04.096Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-70116"}],"assessments":[{"source":"microsoft","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","score":4.2}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T02:15:32.063Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}