A logic issue was addressed with improved restrictions. This issue is fixed in iOS 12.3. A person with physical access to an iOS device may be able to see the email address used for iTunes.
https://support.apple.com/HT210118
Source: Mitre, NVD
Published: 2019-12-18
Updated: 2021-07-21
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Severity: Low
Base Score: 2.4
Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N