Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2021-26855

Microsoft Exchange Server Remote Code Execution Vulnerability

  • Published: Mar 3, 2021
  • Updated: May 4, 2025
  • CVE: CVE-2021-26855
  • Severity: High
  • Exploit:

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
microsoft / exchange_server 2016-cumulative_update_8 2016-cumulative_update_8.x
microsoft / exchange_server 2016-cumulative_update_9 2016-cumulative_update_9.x
microsoft / exchange_server 2013-cumulative_update_21 2013-cumulative_update_21.x
microsoft / exchange_server 2016-cumulative_update_10 2016-cumulative_update_10.x
microsoft / exchange_server 2016-cumulative_update_11 2016-cumulative_update_11.x
microsoft / exchange_server 2013-cumulative_update_22 2013-cumulative_update_22.x
microsoft / exchange_server 2016-cumulative_update_12 2016-cumulative_update_12.x
microsoft / exchange_server 2019-cumulative_update_1 2019-cumulative_update_1.x
microsoft / exchange_server 2013-cumulative_update_23 2013-cumulative_update_23.x
microsoft / exchange_server 2016-cumulative_update_13 2016-cumulative_update_13.x
microsoft / exchange_server 2019-cumulative_update_2 2019-cumulative_update_2.x
microsoft / exchange_server 2016-cumulative_update_14 2016-cumulative_update_14.x
microsoft / exchange_server 2019-cumulative_update_3 2019-cumulative_update_3.x
microsoft / exchange_server 2019-cumulative_update_4 2019-cumulative_update_4.x
microsoft / exchange_server 2016-cumulative_update_15 2016-cumulative_update_15.x
microsoft / exchange_server 2019 2019.x
microsoft / exchange_server 2019-cumulative_update_6 2019-cumulative_update_6.x
microsoft / exchange_server 2019-cumulative_update_5 2019-cumulative_update_5.x
microsoft / exchange_server 2016-cumulative_update_17 2016-cumulative_update_17.x
microsoft / exchange_server 2016-cumulative_update_16 2016-cumulative_update_16.x
microsoft / exchange_server 2019-cumulative_update_7 2019-cumulative_update_7.x
microsoft / exchange_server 2016-cumulative_update_18 2016-cumulative_update_18.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