{"id":"CVE-2026-69403","aliases":["EUVD-2026-73479","GHSA-c94h-fc4q-qxvc"],"status":"published","title":"Windows SMB Server Information Disclosure Vulnerability","description":"Missing authorization in Windows SMB Server 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":"2026-11-11","score":0.0035,"percentile":0.28976,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-09-08T17:15:23Z","modified":"2026-11-10T21:34:22Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69403","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69403"},{"url":"https://github.com/advisories/GHSA-c94h-fc4q-qxvc"}],"sources":{"cve":[{"id":"CVE-2026-69403","title":"Windows SMB Server Information Disclosure Vulnerability","description":"Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.","status":"published","published":"2026-09-08T17:15:23.348Z","modified":"2026-11-10T21:34:22.289Z","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-862"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-73479","description":"Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.","status":"published","published":"2026-09-08T17:15:23Z","modified":"2026-11-10T21:34:22Z","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":"2026-11-10T22:23:48.645955Z"}],"ghsa":[{"id":"GHSA-c94h-fc4q-qxvc","title":"Missing authorization in Windows SMB Server allows an authorized attacker to disclose information...","description":"Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.","status":"published","published":"2026-09-08T18:32:30Z","modified":"2026-09-08T18:32:36Z","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-862"],"updated_at":"2026-11-02T15:11:30.562219Z"}],"nvd":[{"id":"CVE-2026-69403","description":"Missing authorization in Windows SMB Server allows an authorized attacker to disclose information locally.","status":"published","published":"2026-09-08T18:19:02.67Z","modified":"2026-09-21T14:02:59.79Z","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-862"],"updated_at":"2026-11-02T14:12:44.840742Z"}]}}