This issue was addressed with improved checks. This issue is fixed in iOS 14.5 and iPadOS 14.5. A person with physical access to an iOS device may be able to access notes from the lock screen.
https://support.apple.com/en-us/HT212317
Source: Mitre, NVD
Published: 2021-09-08
Updated: 2021-09-15
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Severity: Low
Base Score: 4.6
Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: Medium