In the context of a CVE, what does "unspecified vectors" mean?

Let's take this CVE for example: http://ift.tt/1w29zSd

obtain administrative access via unspecified vectors.

What unspecified vectors means ?

I saw this term in a a lot of CVE.

Does this mean via unspecified factors ? (In the sense that they don't wanna give too much details about it so people can't exploit it easily?)

PS: This is purely for educational purposes.