Has this flaw been fixed?

You do realize that nobody on this forum is likely responsible for any of the choices made by Espressif?

Also, what exactly is your goal with this thread?

Have you done a threat model that says you need to be concerned about this particular vulnerability of the esp32?

Since I never plan on burning the efuses of my esp32 chips, this particular issue doesn’t bother me. The fact that my old m stack devices use (probably counterfeit) FTDI chips and don’t work over 115K or that my new fire beetle 2’s use (possibly counterfeit) CH340 chipsets and don’t work at all with the latest driver (but do work with the older driver) impact me much more.

You could use the esp8266. It doesn’t have the vulnerability, but then it also doesn’t have the capability either. You could try the rp2040, but based on this thread, you will need to do a LOT more to get decent security. https://forums.raspberrypi.com/viewtopic.php?t=324901

So, what exactly are you trying to protect yourself from? Or, what are you trying to prevent others from doing to you or your things?

Or, are you suggesting that we all should stop using esp32 chips and that esphome should stop supporting them?