[whitepoplar]

Does Lockdown Mode prevent this?

[captainkrtek]

Totally speculating, but I’d hope so. After all the prior zero-click image attachment related exploits, which I think lockdown mode was built to address, I’d figure all files are treated in that manner.

[saagarjha]

You can't treat "all files" like that. This would be akin to the "why don't they just make all the file handling out of Lockdown mode code" ;)