{"id":"CVE-2026-97803","published":"2026-10-13T19:01:38Z","modified":"2026-10-30T19:14:28Z","title":"Windows Kernel Elevation of Privilege Vulnerability","vendor":"Microsoft","product":"Windows 11 version 26H1","tier":"tail","description":{"text":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","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","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00353,"percentile":0.28966,"provenance":"source"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97803","tags":["vendor-advisory","patch"]}],"priority":{"score":11.3,"factors":[{"name":"EPSS percentile","points":5.79},{"name":"CVSS severity","points":5.46}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Windows 11 version 26H1","versions":[">= 10.0.28000.0, < 10.0.28000.3231"]}],"euvd":{"id":"EUVD-2026-100405","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-122"}}