https://www.theregister.co.uk/2018/01/05/cisco_releases_meltdown_patch/

Cisco is the latest company to release a patch to tackle the serious security vulnerabilities affecting the majority of CPUs, Meltdown and Spectre.

Cybersecurity group CERT has warned companies that the only way to protect themselves from the flaw was to rip out and replace their processors. It has since backtracked on that advice, saying patches or repairs should do the job instead.