This issue was addressed by restricting options offered on a locked device. This issue is fixed in iOS 16.4 and iPadOS 16.4. A person with physical access to an iOS device may be able to view the last image used in Magnifier from the lock screen.
[
{
"vendor": "Apple",
"product": "iOS and iPadOS",
"versions": [
{
"version": "unspecified",
"status": "affected",
"lessThan": "16.4",
"versionType": "custom"
}
]
}
]