{"id":"CVE-2023-21709","aliases":["EUVD-2023-25876","GHSA-jrpp-v555-xqmp"],"status":"published","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01983,"percentile":0.80712,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307"],"published":"2023-08-08T17:08:46Z","modified":"2026-08-10T16:18:25Z","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 12"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 13"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21709","tags":["vendor-advisory","patch","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21709"},{"url":"https://github.com/advisories/GHSA-jrpp-v555-xqmp"}],"sources":{"cve":[{"id":"CVE-2023-21709","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-08-08T17:08:46.247Z","modified":"2026-08-10T15:11:18.136Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:35:19.959682Z"}],"euvd":[{"id":"EUVD-2023-25876","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-08-08T17:08:46Z","modified":"2026-08-10T15:11:18Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T18:02:04.543433Z"}],"ghsa":[{"id":"GHSA-jrpp-v555-xqmp","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-08-08T18:30:36Z","modified":"2024-04-04T06:41:11Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:56:44.910366Z"}],"nvd":[{"id":"CVE-2023-21709","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-08-08T18:15:11.78Z","modified":"2026-08-10T16:18:25.097Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:08:22.812138Z"}]}}