CVE-2021-26854: Microsoft Exchange Server

Medium severity, CVSS 6.6. EPSS: 24.7% chance of exploitation in the next 30 days.

Microsoft Exchange Server Remote Code Execution Vulnerability

Affected products

• Microsoft Exchange Server: version 2013 only; version 2016 only; version 2019 only

Published 2021-03-03. Last modified 2026-08-19.