Adobe CS3 is about 10+ years old right?. I can see people blaming Adobe if they did provide a 10 yr old software without security updates.
Talking about software that no longer works, I tried network recovery on a 2016 Mac. 2016 Mac is programmed to download only Mojave. And Mojave can't be installed on a Mac that had Catalina at some point in the past (even after a complete disk wipe). It took me a whole day to find another Mac, download offline installer, buy a new USB stick (because the installer was a bit over 8G) and get it reinstalled.
AFAIK, nobody is making 0 days for 10 year old desktop software that doesn't usually connect to the internet. I guess maybe you could craft a malicious image file and target a specific person's computer if you were a state level actor, but seems rather unlikely.
Talking about software that no longer works, I tried network recovery on a 2016 Mac. 2016 Mac is programmed to download only Mojave. And Mojave can't be installed on a Mac that had Catalina at some point in the past (even after a complete disk wipe). It took me a whole day to find another Mac, download offline installer, buy a new USB stick (because the installer was a bit over 8G) and get it reinstalled.