{"id":"CVE-2023-21764","aliases":["EUVD-2023-25931","GHSA-282j-9h8p-xf7h"],"status":"published","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00538,"percentile":0.45612,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-426"],"published":"2023-01-10T00:00:00Z","modified":"2026-06-17T05:33:55Z","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-2023-21764","tags":["vendor-advisory","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21764"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21764"},{"url":"https://github.com/advisories/GHSA-282j-9h8p-xf7h"}],"sources":{"cve":[{"id":"CVE-2023-21764","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:36:07.163Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-426"],"updated_at":"2026-11-02T14:35:19.959682Z"}],"euvd":[{"id":"EUVD-2023-25931","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-01-01T00:36:07Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:04:30.878565Z"}],"ghsa":[{"id":"GHSA-282j-9h8p-xf7h","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability. This CVE ID is unique from CVE...","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2023-21763.","status":"published","published":"2023-01-11T00:30:45Z","modified":"2023-05-06T05:00:39Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:54:35.04449Z"}],"nvd":[{"id":"CVE-2023-21764","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2023-01-10T22:15:19.117Z","modified":"2026-06-17T05:33:55.36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-426"],"updated_at":"2026-11-02T14:07:45.305824Z"}]}}