Just because there hasn't been found a vulnerability in a wallet with a lower userbase, it doesn't mean those are safer than electrum..
You can move to another wallet. But the question is what you expect from this wallet.
A desktop wallet shouldn't be used to store larger amounts of money anway. It may be easier to exploit this vulnerability.. but generally its easy enough to get malware spread around.
So you should never consider your desktop wallet as a safe place to store cryptos. Electrum has a ton of features. Besides core i would not know which has such a variety of functions.
Its up to you which wallet you prefer. Electrum in combination with the nano s is an extremely safe way (not vulnerable in this situation) of storing btc and having a ton of features.