{"id":"CVE-2026-97803","aliases":["EUVD-2026-100405","GHSA-r87q-3xpf-cqh6"],"status":"published","title":"Windows Kernel Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Kernel 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":"2026-11-10","score":0.00353,"percentile":0.29262,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-10-13T19:01:38Z","modified":"2026-11-10T20:46:44Z","products":[{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows_11_26h1"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97803","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97803"},{"url":"https://github.com/advisories/GHSA-r87q-3xpf-cqh6"}],"sources":{"cve":[{"id":"CVE-2026-97803","title":"Windows Kernel Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:38.264Z","modified":"2026-11-10T20:46:44.685Z","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":"2026-11-10T22:18:30.298108Z"}],"euvd":[{"id":"EUVD-2026-100405","description":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:38Z","modified":"2026-11-10T20:46:44Z","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":"2026-11-10T22:23:55.284051Z"}],"ghsa":[{"id":"GHSA-r87q-3xpf-cqh6","title":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges...","description":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T21:37:15Z","modified":"2026-10-13T21:37:15Z","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":"2026-11-02T15:13:20.228797Z"}],"nvd":[{"id":"CVE-2026-97803","description":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:22:18.16Z","modified":"2026-10-16T10:40:28.667Z","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":"2026-11-02T14:12:58.630796Z"}]}}