This issue was addressed with improved setting propagation. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1. Turning off "Load remote content in messages” may not apply to all mail previews.
https://support.apple.com/HT210918
Source: Mitre, NVD
Published: 2020-02-27
Updated: 2021-07-21
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N
Severity: Low
Base Score: 3.3
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N