{"id":"CVE-2026-112809","aliases":["EUVD-2026-121883","GHSA-mjf9-c9mj-32x2"],"status":"published","title":"Windows Composite Image File System Information Disclosure Vulnerability","description":"Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.","severity":{"version":"3.1","score":5.5,"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.00406,"percentile":0.35433,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284","CWE-424"],"published":"2026-11-10T18:18:21Z","modified":"2026-11-12T18:47:47Z","products":[{"vendor":"microsoft","product":"windows 11 version 26h1"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112809","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112809"},{"url":"https://github.com/advisories/GHSA-mjf9-c9mj-32x2"}],"sources":{"cve":[{"id":"CVE-2026-112809","title":"Windows Composite Image File System Information Disclosure Vulnerability","description":"Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.","status":"published","published":"2026-11-10T18:18:21.667Z","modified":"2026-11-13T18:07:13.921Z","cvss":[{"version":"3.1","score":5.5,"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","level":"medium","assessor":"cna"}],"cwes":["CWE-424","CWE-284"],"updated_at":"2026-11-12T22:49:18.558059Z"}],"euvd":[{"id":"EUVD-2026-121883","description":"Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.","status":"published","published":"2026-11-10T18:18:21Z","modified":"2026-11-13T18:07:13Z","cvss":[{"version":"3.1","score":5.5,"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","level":"medium"}],"updated_at":"2026-11-10T23:24:32.395185Z"}],"ghsa":[{"id":"GHSA-mjf9-c9mj-32x2","title":"Improper access control in Windows Composite Image File System allows an authorized attacker to...","description":"Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.","status":"published","published":"2026-11-10T21:32:42Z","modified":"2026-11-12T21:31:59Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-284","CWE-424"],"updated_at":"2026-11-12T21:43:38.108368Z"}],"nvd":[{"id":"CVE-2026-112809","description":"Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.","status":"published","published":"2026-11-10T19:18:45.44Z","modified":"2026-11-12T22:18:10.41Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-424","CWE-284"],"updated_at":"2026-11-12T23:33:08.708953Z"}]}}