CVE-2020-11806: Mailstore Server

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

In MailStore Outlook Add-in (and Email Archive Outlook Add-in) through 12.1.2, the login process does not validate the validity of the certificate presented by the server.

Affected products

• Mailstore Mailstore Server: up to and including 12.1.2

Published 2020-04-23. Last modified 2026-06-17.