{"id":"CVE-2021-33768","aliases":["EUVD-2021-20445","GHSA-79w4-597w-fxxx"],"status":"published","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/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":0.01235,"percentile":0.69294,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-07-14T17:53:42Z","modified":"2026-08-10T18:31:38Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 20"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 21"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 10"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 9"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33768","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33768","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33768"},{"url":"https://github.com/advisories/GHSA-79w4-597w-fxxx"}],"sources":{"cve":[{"id":"CVE-2021-33768","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2021-07-14T17:53:42Z","modified":"2026-08-10T15:11:36.947Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20445","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2021-07-14T17:53:42Z","modified":"2026-08-10T15:11:36Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:04.178454Z"}],"ghsa":[{"id":"GHSA-79w4-597w-fxxx","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-2021-34470, CVE-2021-34523.","status":"published","published":"2022-05-24T19:07:54Z","modified":"2026-08-10T18:31:38Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:10:15.270288Z"}],"nvd":[{"id":"CVE-2021-33768","description":"Microsoft Exchange Server Elevation of Privilege Vulnerability","status":"published","published":"2021-07-14T18:15:10.45Z","modified":"2026-08-10T16:17:40.627Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":5.2,"vector":"AV:A/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:55.747384Z"}]}}