CVE-2019-0586: Microsoft Exchange Server

Critical severity, CVSS 9.8. EPSS: 15.4% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microsoft Exchange Memory Corruption Vulnerability." This affects Microsoft Exchange Server.

Affected products

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

Published 2019-01-08. Last modified 2026-06-17.