These have been helpfully grouped into two vulnerabilities: Spectre, and Meltdown. Spectre allows, among other things, user-mode applications to extract information from other processes running on the same system. Alternatively, it can be used by code to extract information from its own process. Meltdown can be exploited by normal programs to read the contents of private kernel memory.
Hillstone Networks E Series Next Generation Firewall use the MIPS-based Cavium processor, instead of Intel processor. There is currently no report of this vulnerability for this processor.
For more information about this CPU vulnerability, please read these articles: