UpHeron
All vulnerabilities

Servers and applications

CVE-2021-31196

Microsoft Exchange Server Remote Code Execution Vulnerability

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 21 Aug 2024.

Severity
High 7.2
Published
14 Jul 2021
Last changed
10 Aug 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Microsoft Exchange ServerServers and applications · cpe:a:microsoft:exchange_server
  • Version 2013-cumulative_update_23
  • Version 2016-cumulative_update_20
  • Version 2016-cumulative_update_21
  • Version 2019-cumulative_update_9
  • Version 2019-cumulative_update_10

Known exploited

CISA name
Microsoft Exchange Server Information Disclosure Vulnerability
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due for US agencies
11 Sept 2024
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-31196
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-31196