I've read a lot of conflicting information about this. One source says Firefox doesn't use the windows store, so it's not affected. Then this says it is affected. But how? Are Lenovo laptops coming preloaded with Firefox? Is it happening after the fact?
Firefox doesn't use the Windows certificate store. The Superfish installer will add its certificate to Firefox's store if Firefox is already installed, but it isn't on Lenovo laptops.