CVE-2019-1233: Microsoft Exchange Server

High severity, CVSS 7.5. EPSS: 6.2% chance of exploitation in the next 30 days.

A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service Vulnerability'.

Affected products

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

Published 2019-09-11. Last modified 2026-06-17.