I know using outdated software is a bad idea, but until recently I have only been able to boot TAILS from LiveCDs that come with some Linux magazines. Since these arrive in my country late, I end up using some outdated version. I haven't had any problems with it until this happened. With recent updates to TAILS, I'm guessing a LiveCD from a downloaded image should probably boot on my computer now.
For obvious reasons, downloading TAILS on an unencrypted and unanonymized connection is not an option, but now I'm worried about downloading TAILS using a possibly vulnerable version as well.
I'm aware that tor, and especially TAILS are somewhat safe from mitm attacks and tampering, but I assume this is mostly true for the most up-to-date versions.
What kinds of attacks and exploits are possible on outdated versions of TAILS? Would it be safe to download the newver versions using one?