For me, CVSS and the people who use it lost all credibility when they asked my team for a urgent update to patch… a pcmcia bug in the kernel of our EC2 instances.
It's so easy to come up with stories about this that you don't really even need examples. I think everybody just sort of understands that if you put CVSS to the test, it would be ludicrously easy to stack two 8.0+ vulnerabilities next to each other with wildly different severity.