{"id":"CVE-2023-21761","aliases":["EUVD-2023-25928","GHSA-4374-5gxx-h9r3"],"status":"published","title":"Microsoft Exchange Server Information Disclosure Vulnerability","description":"Microsoft Exchange Server Information Disclosure Vulnerability","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01698,"percentile":0.77377,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2023-01-10T00:00:00Z","modified":"2026-06-17T05:33:54Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 23"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 11"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 12"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21761","tags":["vendor-advisory","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21761"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21761"},{"url":"https://github.com/advisories/GHSA-4374-5gxx-h9r3"}],"sources":{"cve":[{"id":"CVE-2023-21761","title":"Microsoft Exchange Server Information Disclosure Vulnerability","description":"Microsoft Exchange Server Information Disclosure Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:36:05.556Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:35:20.368244Z"}],"euvd":[{"id":"EUVD-2023-25928","description":"Microsoft Exchange Server Information Disclosure Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:36:05Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:04:30.878565Z"}],"ghsa":[{"id":"GHSA-4374-5gxx-h9r3","title":"Microsoft Exchange Server Information Disclosure Vulnerability.","description":"Microsoft Exchange Server Information Disclosure Vulnerability.","status":"published","published":"2023-01-11T00:30:46Z","modified":"2023-04-27T21:30:23Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T14:54:33.975596Z"}],"nvd":[{"id":"CVE-2023-21761","description":"Microsoft Exchange Server Information Disclosure Vulnerability","status":"published","published":"2023-01-10T22:15:18.927Z","modified":"2026-06-17T05:33:54.92Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:07:45.305824Z"}]}}