A new security flaw in Intel chipset, known as SGAxe, was revealed, which particularly affects Intel's Coffee Lake Refresh processors.
Intel has has released patches fixing some of the problems, but others are yet to be fixed.

SGAxe breaches the security guarantees of Intel Software Guard eXtensions (SGX) services, which look to protect the inner workings of a system alongside vital data such as passwords and encryption keys.

Using SGAxe, an attacker could steal legitmate SGX attestation keys from Intel’s quoting enclave in existing SGX machines, meaning they could then impersonate such systems and gain access to target devices.

[techradar.com...]

Intel has published a list of affected processors in this document (PDF) [intel.com...]