Apple · Ios · CVE-2018-4174
**Name of the Vulnerable Software and Affected Versions**
iOS versions prior to 11.3
macOS versions prior to 10.13.4
**Description**
The issue involves the Mail component and allows man-in-the-middle attackers to read S/MIME encrypted messages by leveraging an inconsistency in the user interface.
**Recommendations**
For iOS versions prior to 11.3, update to version 11.3 or later.
For macOS versions prior to 10.13.4, update to version 10.13.4 or later.