{"affected":[{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 version 26H1","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.28000.3501","status":"affected","version":"10.0.28000.0","versionType":"custom"}]}],"cveId":"CVE-2026-112809","cwes":["CWE-284"],"description":"Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.","epss":{"date":"2026-11-12","percentile":0.4117,"score":0.0047},"exploits":[],"kev":null,"metrics":[{"score":5.5,"severity":"medium","source":"CNA: microsoft","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","version":"3.1"},{"score":5.5,"severity":"medium","source":"NVD: secure@microsoft.com","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1794509267268,"publishedAt":1794334701667,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112809"},{"source":"secure@microsoft.com","tags":[],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112809"}],"remediation":[{"kind":"fix","source":"CNA: microsoft","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112809"}],"revision":"a01697e6739de186acc16f8dc602a992c2ddff43353678880c06b90d6cc08509","sources":[{"modifiedAt":1794509267268,"name":"CNA: microsoft","retrievedAt":1794510512445,"url":"https://www.cve.org/CVERecord?id=CVE-2026-112809"},{"modifiedAt":1794421118777,"name":"NVD","retrievedAt":1794443492758,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112809"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794500137083,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112809"}],"ssvc":{"assessedAt":1794342065582,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Windows Composite Image File System Information Disclosure Vulnerability","updatedAt":1794510512445}