Looks like it was an Oracle PeopleSoft 0-day so I imagine there are a lot more systems vulnerable.

And, was this system exposed to internet without any VPN? Out was it also compromised?

I wonder if that was really a 0-day or an intentional backdoor?

it's Oracle, 99% chance it's a 0-day lol

it's Oracle, 99% chance it's a back-door lol