Vulnerability Database

313,825

Total vulnerabilities in the database

CVE-2021-31207

Microsoft Exchange Server Security Feature Bypass Vulnerability

  • Published: May 11, 2021
  • Updated: Nov 4, 2025
  • CVE: CVE-2021-31207
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.6
  • AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: Medium
  • Score: 6.5
  • AV:N/AC:L/Au:S/C:P/I:P/A:P

CWEs:

OWASP TOP 10:

Software From Fixed in
microsoft / exchange_server 2013-cumulative_update_23 2013-cumulative_update_23.x
microsoft / exchange_server 2019-cumulative_update_8 2019-cumulative_update_8.x
microsoft / exchange_server 2016-cumulative_update_19 2016-cumulative_update_19.x
microsoft / exchange_server 2016-cumulative_update_20 2016-cumulative_update_20.x
microsoft / exchange_server 2019-cumulative_update_9 2019-cumulative_update_9.x