Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2021-34453

Microsoft Exchange Server Denial of Service Vulnerability

  • Published: Oct 13, 2021
  • Updated: May 4, 2025
  • CVE: CVE-2021-34453
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

No CWE or OWASP classifications available.

Software From Fixed in
microsoft / exchange_server 2016-cumulative_update_21 2016-cumulative_update_21.x
microsoft / exchange_server 2019-cumulative_update_10 2019-cumulative_update_10.x
microsoft / exchange_server 2016-cumulative_update_22 2016-cumulative_update_22.x
microsoft / exchange_server 2019-cumulative_update_11 2019-cumulative_update_11.x