{"id":"CVE-2023-21540","aliases":["EUVD-2023-25707","GHSA-7rf6-9vvv-hg2x"],"status":"published","title":"Windows Cryptographic Information Disclosure Vulnerability","description":"Windows Cryptographic Information Disclosure Vulnerability","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":0.00613,"percentile":0.49687,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2023-01-10T00:00:00Z","modified":"2026-06-17T05:33:07Z","products":[{"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 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_20h2"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_21h2"},{"vendor":"microsoft","product":"windows_11_22h2"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21540","tags":["vendor-advisory","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21540"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21540"},{"url":"https://github.com/advisories/GHSA-7rf6-9vvv-hg2x"}],"sources":{"cve":[{"id":"CVE-2023-21540","title":"Windows Cryptographic Information Disclosure Vulnerability","description":"Windows Cryptographic Information Disclosure Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:35:27.282Z","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-20"],"updated_at":"2026-11-02T14:35:20.368244Z"}],"euvd":[{"id":"EUVD-2023-25707","description":"Windows Cryptographic Information Disclosure Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:35:27Z","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":"2026-11-03T00:04:31.291576Z"}],"ghsa":[{"id":"GHSA-7rf6-9vvv-hg2x","title":"Windows Cryptographic Information Disclosure Vulnerability. This CVE ID is unique from CVE-2023...","description":"Windows Cryptographic Information Disclosure Vulnerability. This CVE ID is unique from CVE-2023-21550, CVE-2023-21559.","status":"published","published":"2023-01-11T00:30:47Z","modified":"2023-05-06T05:00:40Z","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"}],"updated_at":"2026-11-02T14:54:35.04449Z"}],"nvd":[{"id":"CVE-2023-21540","description":"Windows Cryptographic Information Disclosure Vulnerability","status":"published","published":"2023-01-10T22:15:14.967Z","modified":"2026-06-17T05:33:07.41Z","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"},{"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-20"],"updated_at":"2026-11-02T14:07:45.305824Z"}]}}