{"id":"CVE-2026-72971","revision":"a70b49f48c66496c86594b3e8e6f0ddb","records":[{"revision":"a70b49f48c66496c86594b3e8e6f0ddb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72971","aliases":[],"title":"Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability","description":"Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.","state":0,"publishedAt":"2026-08-11T17:05:40.177+00:00","modifiedAt":"2026-10-21T20:53:10.809+00:00","affected":[{"ecosystem":"Vendor product","name":"Windows 11 version 26H1","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows 11 version 26H1\",\n                    \"platforms\": [\n                        \"ARM64-based Systems\",\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.28000.0\",\n                            \"lessThan\": \"10.0.28000.2704\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","score":5.5,"severity":"MEDIUM"}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72971"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72971","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72971","identifiers":["CVE-2026-72971"]},"retained":false,"historicalAffected":[]}],"coverage":[]}