CVE-2018-8305
An information disclosure vulnerability exists in Windows Mail Client when a message is opened, aka "Windows Mail Client Information Disclosure Vulnerability." This affects Mail, Calendar, and People in Windows 8.1 App Store.
Date published : 2018-07-10
http://www.securityfocus.com/bid/104618
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8305