Researchers say some AMD processors have critical flaws and backdoors. The 13 vulnerabilities were found in AMD's Secure Processor, RYZEN and EPYC. The technical details of the vulns are not public but a second security firm independently verified it.https://motherboard.vice.com/en_us/article/kzpm5x/amd-secure-processor-ryzen-epyc-vulnerabilities-and-backdoors …
Anything’s possible I guess. And yes, doesn’t look like responsible disclosure at all.