My official response is here:
https://ripple.com/dev-blog/response-china-cert-report/TL;DR: It looks like they just ran a static analysis tool against a combination of security sensitive and irrelevant code, totaling the number of potential issues detected by automated, static analysis. This is almost completely meaningless because the vast majority of issues reported by such tools are false positives with no actual security implication. But it's doubly meaningless when you use it on code that already uses that exact same methodology because every issue that can be identified by this method has already been found and fixed.