This sounds a bit strange to me. Oracle releases a lot of updates for the JRE.
eg Java 8 is up to number 131 at the time of writing this, though they're probably (hopefully!) not all security updates:
• http://www.oracle.com/technetwork/java/javase/downloads/inde...
• http://www.oracle.com/technetwork/java/javase/8u-relnotes-22...
With that in mind, wouldn't an embedded Oracle JVM be a very bad idea from a security standpoint? (if network connected, and not updated of course)
A home made, completely un audit able, built in JVM (that apparently can't be updated based on your comments) seems crazy dangerous.
Just saying "it's probably ok, because it's java" as the op alluded to is a very dangerous line of thinking. that only works with one of the public, auditable implementations.
I dunno. it's a the devil you know vs the devil you don't problem. How do you feel about the security of intel software in general?
I'd be surprised to hear that using a Java, say, socket or HTTP lib, exposed you to more risk in general than using any other language/runtime/lib.
It seems really hard to test from the point of an outside observer. I'd strongly suspect it's hard to test internally as well, which would indicate there are a bunch of bugs lurking in there.