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.
http://www.securitytracker.com/id/1041270
http://www.securityfocus.com/bid/104618
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8305
Source: Mitre, NVD
Published: 2018-07-11
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS: 0.07835