CVE-2019-1373: Microsoft Exchange Server

Critical severity, CVSS 9.8. EPSS: 21.7% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists in Microsoft Exchange through the deserialization of metadata via PowerShell, aka 'Microsoft Exchange Remote Code Execution Vulnerability'.

Affected products

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

Published 2019-11-12. Last modified 2026-06-17.