{"id":"CVE-2023-21766","aliases":["EUVD-2023-25933","GHSA-wphc-qxmp-3mpm"],"status":"published","title":"Windows Overlay Filter Information Disclosure Vulnerability","description":"Windows Overlay Filter Information Disclosure Vulnerability","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/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":0.00922,"percentile":0.60654,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-362","CWE-591"],"published":"2023-01-10T00:00:00Z","modified":"2026-06-17T05:33:55Z","exploits":[{"source":"pocgithub","id":"Y3A/cve-2023-21766","title":"Y3A/cve-2023-21766","date":"2023-06-30","url":"https://github.com/Y3A/cve-2023-21766"}],"products":[{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 20h2"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 21h2"},{"vendor":"microsoft","product":"windows 11 version 22h2"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_11"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21766","tags":["vendor-advisory","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21766"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21766"},{"url":"https://github.com/advisories/GHSA-wphc-qxmp-3mpm"}],"sources":{"cve":[{"id":"CVE-2023-21766","title":"Windows Overlay Filter Information Disclosure Vulnerability","description":"Windows Overlay Filter Information Disclosure Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:36:08.338Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-591"],"updated_at":"2026-11-02T14:35:20.368244Z"}],"euvd":[{"id":"EUVD-2023-25933","description":"Windows Overlay Filter Information Disclosure Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:36:08Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:04:30.878565Z"}],"ghsa":[{"id":"GHSA-wphc-qxmp-3mpm","title":"Windows Overlay Filter Information Disclosure Vulnerability.","description":"Windows Overlay Filter Information Disclosure Vulnerability.","status":"published","published":"2023-01-11T00:30:45Z","modified":"2023-04-27T21:30:24Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:54:33.975596Z"}],"nvd":[{"id":"CVE-2023-21766","description":"Windows Overlay Filter Information Disclosure Vulnerability","status":"published","published":"2023-01-10T22:15:19.243Z","modified":"2026-06-17T05:33:55.72Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-591","CWE-362"],"updated_at":"2026-11-02T14:07:45.305824Z"}]}}