{"id":"CVE-2026-69544","aliases":["EUVD-2026-73137","GHSA-4qx9-g9wc-38c2"],"status":"published","title":"Windows SMB Client Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00333,"percentile":0.26956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-09-08T17:12:52Z","modified":"2026-11-10T21:31:36Z","products":[{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows_11_26h1"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69544","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69544"},{"url":"https://github.com/advisories/GHSA-4qx9-g9wc-38c2"}],"sources":{"cve":[{"id":"CVE-2026-69544","title":"Windows SMB Client Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:12:52.03Z","modified":"2026-11-10T21:31:36.756Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T22:48:53.006191Z"}],"euvd":[{"id":"EUVD-2026-73137","description":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:12:52Z","modified":"2026-11-10T21:31:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:53.008995Z"}],"ghsa":[{"id":"GHSA-4qx9-g9wc-38c2","title":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate...","description":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:32:44Z","modified":"2026-09-08T18:32:46Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:11:31.116638Z"}],"nvd":[{"id":"CVE-2026-69544","description":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:19:22.8Z","modified":"2026-09-24T19:00:44.567Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:44.840742Z"}]}}