{"id":"CVE-2026-70578","aliases":["EUVD-2026-73655","GHSA-vq98-mxj2-92x5"],"status":"published","title":"Windows Credential Guard Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Credential Guard allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/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":0.00264,"percentile":0.18396,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-09-08T17:16:59Z","modified":"2026-11-10T21:36:02Z","products":[{"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_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"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70578","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70578"},{"url":"https://github.com/advisories/GHSA-vq98-mxj2-92x5"}],"sources":{"cve":[{"id":"CVE-2026-70578","title":"Windows Credential Guard Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Credential Guard allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:16:59.478Z","modified":"2026-11-10T21:36:02.874Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/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":"2026-11-10T22:48:53.557052Z"}],"euvd":[{"id":"EUVD-2026-73655","description":"Heap-based buffer overflow in Windows Credential Guard allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:16:59Z","modified":"2026-11-10T21:36:02Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T22:23:47.576985Z"}],"ghsa":[{"id":"GHSA-vq98-mxj2-92x5","title":"Heap-based buffer overflow in Windows Credential Guard allows an authorized attacker to elevate...","description":"Heap-based buffer overflow in Windows Credential Guard allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:33:07Z","modified":"2026-09-08T18:33:28Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:11:32.915208Z"}],"nvd":[{"id":"CVE-2026-70578","description":"Heap-based buffer overflow in Windows Credential Guard allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:20:10.72Z","modified":"2026-09-24T19:51:15.783Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}