Long supply chains, many OEMs – confidential advance information with TLP.

Vulnerabilities must first be shared confidentially with OEMs before a public release follows.
TLP:AMBER advisories for authorised consumers, later published as a new version under TLP:CLEAR – all in one workflow.
“TLP finally enforced technically instead of by a disclaimer in a PDF.”
Cybersecurity Manager, tier-1 supplier (example)