[LeafStorm]

This looks like a fairly well-designed format. My main concern is that this seems to have suddenly appeared out of nowhere and gone directly to RFC. (Presumably there was an Internet-Draft, but I have never seen anything about this before.)

[ape4]

These kind of binary formats always have vulnerabilities. eg http://technet.microsoft.com/en-us/security/bulletin/ms04-00...

[AsymetricCom]

It would be up to the parser to implement the standard without a vulnerability, but a protocol is a language and a language can be designed to be self-referential, hypocritical, inconstant etc, making a conforming parser impossible. A lot of these so called "living standards" are probably not "evolving" so much as partially classified.