My tinfoil hat says they want to privatize this through one of the administrations friends. A disastrous decision here.
In the UK the some "entrepreneur" was after monetizing access to the Land Registry a couple of years ago. Apparently the free UK Gov service was not fit for purpose it needed a paywall to make it better. Nothing as globally significant as the CVE database, but you can see if the vultures are going after small UK Gov services, something like the CVE database is absolutely a chance to add to the executive bonus pool.