{"id":"CVE-2026-20819","aliases":["EUVD-2026-2208","GHSA-5jf9-4wp5-w27r"],"status":"published","title":"Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00543,"percentile":0.45959,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-822"],"published":"2026-01-13T17:56:15Z","modified":"2026-07-30T21:16:58Z","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_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20819","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20819"},{"url":"https://github.com/advisories/GHSA-5jf9-4wp5-w27r"}],"sources":{"cve":[{"id":"CVE-2026-20819","title":"Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.","status":"published","published":"2026-01-13T17:56:15.181Z","modified":"2026-07-30T20:46:33.083Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T13:35:33.380441Z"}],"euvd":[{"id":"EUVD-2026-2208","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.","status":"published","published":"2026-01-13T17:56:15Z","modified":"2026-07-30T20:46:33Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T18:02:27.233735Z"}],"ghsa":[{"id":"GHSA-5jf9-4wp5-w27r","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 disclose information locally.","status":"published","published":"2026-01-13T18:31:08Z","modified":"2026-01-13T18:31:15Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T15:05:35.156514Z"}],"nvd":[{"id":"CVE-2026-20819","description":"Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.","status":"published","published":"2026-01-13T18:16:08.983Z","modified":"2026-07-30T21:16:58.433Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T14:12:03.683495Z"}]}}