{"id":"CVE-2026-108135","aliases":[],"title":"Windows Backup Engine Elevation of Privilege Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"vendor":"Microsoft","name":"Windows 10 Version 21H2","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.19044.0","status":"affected","lessThan":"10.0.19044.7807","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-108135"},{"vendor":"Microsoft","name":"Windows 10 Version 22H2","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.19045.0","status":"affected","lessThan":"10.0.19045.7807","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-108135"},{"vendor":"Microsoft","name":"Windows 11 version 23H2","platforms":["ARM64-based Systems"],"versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7652","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-108135"},{"vendor":"Microsoft","name":"Windows 11 Version 23H2","platforms":["x64-based Systems"],"versions":[{"version":"10.0.22631.0","status":"affected","lessThan":"10.0.22631.7652","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-108135"},{"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-2026-108135"},{"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-2026-108135"},{"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-2026-108135"},{"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-2026-108135"}],"remediation":[],"description":"Improper link resolution before file access ('link following') in Windows Backup Engine allows an authorized attacker to elevate privileges locally.","severity":"high","score":7,"published":"2026-10-13T19:01:45.274Z","modified":"2026-10-28T18:22:29.453Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108135"],"sources":[{"name":"CVE","id":"CVE-2026-108135","modified":"2026-10-28T18:22:29.453Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-108135"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":7}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T22:10:31.402Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-28T19:30:40.034Z","attemptedAt":"2026-10-28T19:30:40.034Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-28T19:30:36.993Z","attemptedAt":"2026-10-28T19:30:36.993Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T19:30:37.130Z","attemptedAt":"2026-10-28T19:30:37.130Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-28T19:30:36.248Z","attemptedAt":"2026-10-28T19:30:36.248Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-108135","url":"https://www.first.org/epss/","probability":0.003,"percentile":0.22601,"date":"2026-10-28","checkedAt":"2026-10-28T19:30:36.248Z"},{"source":"GitHub Advisory Database","id":"GHSA-wfr6-h9hr-j5vv","url":"https://github.com/advisories/GHSA-wfr6-h9hr-j5vv","modified":"2026-10-13T21:33:25Z","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-28T19:30:36.993Z"},{"source":"ENISA EUVD","id":"EUVD-2026-100454","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-100454","modified":"Oct 28, 2026, 6:22:29 PM","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","checkedAt":"2026-10-28T19:30:37.130Z"},{"source":"NVD","id":"CVE-2026-108135","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108135","modified":"2026-10-23T19:46:13.093","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-28T19:30:40.034Z"}]}