A CVE is no longer one bug: Cisco has changed the unit of measurement
On 19 August Cisco published two advisories carrying five CVEs scored 10.0 between them. They are not five bugs: each identifier groups an entire class of bugs and carries the score of the worst one in the bag. Across the four hardening advisories we reviewed the mitigation line says the same thing, "none." This is not a complaint about Cisco: it is that the unit you count vulnerabilities in has changed size, and your inventory has not noticed.