CVE-2023-21762: Microsoft Exchange Server

High severity, CVSS 8.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Microsoft Exchange Server Spoofing Vulnerability

Affected products

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

Published 2023-01-10. Last modified 2026-06-17.