The Underminr research discloses an architectural technique — not a patchable software flaw — that allows attackers to route C2 traffic through shared CDN infrastructure so that it appears to terminate at trusted CDN IP ranges. No CVE exists and no patch is forthcoming from any individual CDN provider. The estimated affected surface is 88 million domains. Organizations that rely on DNS-based filtering or IP reputation to govern CDN-destined traffic have a structural detection blind spot for this technique.