{"id":"CVE-2026-62798","aliases":["EUVD-2026-56387","GHSA-mqr9-rmf4-cr4m"],"status":"published","title":"Win32k Information Disclosure Vulnerability","description":"Untrusted pointer dereference in Windows Win32K 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":0.00404,"percentile":0.34993,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-822"],"published":"2026-08-11T17:04:26Z","modified":"2026-10-30T17:20:15Z","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-2026-62798","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62798"},{"url":"https://github.com/advisories/GHSA-mqr9-rmf4-cr4m"}],"sources":{"cve":[{"id":"CVE-2026-62798","title":"Win32k Information Disclosure Vulnerability","description":"Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:04:26.976Z","modified":"2026-10-30T17:20:15.934Z","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":"2026-11-02T14:20:14.665567Z"}],"euvd":[{"id":"EUVD-2026-56387","description":"Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:04:26Z","modified":"2026-10-30T17:20:15Z","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/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:59:04.768038Z"}],"ghsa":[{"id":"GHSA-mqr9-rmf4-cr4m","title":"Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose...","description":"Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T18:31:23Z","modified":"2026-08-11T18:31:24Z","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":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-62798","description":"Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:18:34.04Z","modified":"2026-08-13T17:11:51.083Z","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","level":"medium","assessor":"secondary"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}