I was prepared to disagree with you, but I agree: I'd say there's a strong norm of not calling things RCE unless you can actually demonstrate RCE, or at least have a clean pathway to demonstrating it (e.g. a full write-what-where).
It's perfectly sufficient to have a CVE for just memory corruption, so the "RCE" framing here feels overstated. Particularly when an LLM should easily prove RCE out if it is in fact present.
Another comment says it has a CVSS score of 9.8 which means CVE, easy to exploit, and an exploit gives LOTS of access.
Before we get too whiny about "it's only memory corruption without any RCE PoC", let's wait until the CVE is unembargoed.