Security impact of missing Microcode

Hello, i’m currently wondering what impact could have missing CPU microcode on my Setup. I’m somewhat targeted in my country.
I have a x230 and it has a 3rd Gen intel CPU, which were released around 2012. According to some posts on other forums, intel CPUs have around 10 years of support before they become EOL. Sadly i couldn’t find any official from intel themselves. So my question would be, how could this affect me and should i upgrade asap?

From QSB-098:

CPU microcode updates are sometimes necessary in order to address important security vulnerabilities. If CPU microcode updates are not properly loaded, these security vulnerabilities may remain exploitable.

You can search through past QSBs to see all the security vulnerabilities that require microcode updates in order to be fixed.

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