Zenbleed: cross-process infoleak vulnerability in AMD Zen 2 Processors - everything you need to know

**Zenbleed (CVE-2023-20593)** — A use-after-free speculative-execution flaw in AMD Zen 2 CPUs allowing local unprivileged code to read privileged memory and leak secrets; affects Ryzen 3000/4000/5000, ThreadRipper 3000, and EPYC Rome, among others. Cloud providers and vendors are releasing microcode/BIOS fixes, and the report recommends ensuring hosts are patched (VM-level fixes are ineffective) and identifying impacted instance types while noting that cloud impact is rated low due to required local code execution and CSP mitigations.