{"id":"CVE-2026-83498","aliases":["EUVD-2026-73921","GHSA-qm68-4627-wr66"],"status":"published","title":"Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave 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":0.26951,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-822"],"published":"2026-09-08T17:19:31Z","modified":"2026-11-10T21:38:31Z","products":[{"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 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"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_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83498","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83498"},{"url":"https://github.com/advisories/GHSA-qm68-4627-wr66"}],"sources":{"cve":[{"id":"CVE-2026-83498","title":"Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:19:31.588Z","modified":"2026-11-10T21:38:31.093Z","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-822"],"updated_at":"2026-11-10T22:48:54.14451Z"}],"euvd":[{"id":"EUVD-2026-73921","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:19:31Z","modified":"2026-11-10T21:38:31Z","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":"2026-11-10T23:24:18.784503Z"}],"ghsa":[{"id":"GHSA-qm68-4627-wr66","title":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an...","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:33:34Z","modified":"2026-09-08T18:34:18Z","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-822"],"updated_at":"2026-11-02T15:11:34.690977Z"}],"nvd":[{"id":"CVE-2026-83498","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:21:04.243Z","modified":"2026-09-10T15:01:25.24Z","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-822"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}