An out-of-bounds read in an RDP client parses input from remote servers it cannot validate. That's the structural condition, and it means this vulnerability isn't just scored incorrectly — it's architecturally mischaracterized by the scoring framework. The CVSS 6.5 treats this as moderate information disclosure, but an OOB read in client parsing often leaks authentication handles, session tokens, or clipboard data that become credentials for follow-on attacks. The read itself is reconnaissance; the blast radius is the replayed credential against higher-trust targets.
The patch commit tells you more than the CVE ever will. A one-line bounds check suggests a shallow hole. A refactor across multiple message types suggests the vendor found a systemic pattern — meaning other undiscovered variants likely exist in adjacent parsing paths. Historical clustering confirms this: RDP client parsing has repeatedly expressed the same genotype around MCS channel negotiation, fast-path packet lengths, and GCC responses. Each patch is a phylogenetic marker revealing where selection pressure is building.
Compensating controls matter less than understanding the trust model. If your control is "don't connect to untrusted servers," you're relying on user judgment — not a technical control. The architectural question: is your RDP deployment model already assuming compromised or malicious servers are an expected condition? If so, a 6.5 OOB read is infrastructure reconnaissance, and the patch timeline just became SL-1.
Organizations defer these patches because the score signals non-urgency, but each deferral normalizes the next one. The temporal compounding means the gap between disclosure and remediation reshapes actual threat tolerance in production.