A new series of attacks against almost every Wi-Fi router has been posted called FragAttacks. Anyone who can receive radio signals from your router or Wi-Fi hotspot can use these vulnerabilities and steal data from your devices. The issue is the design of the Wi-Fi protocols themselves, along with programming errors to certain Wi-Fi devices. Some products have multiple issues and a dozen different CVEs have been posted that document them.
You can read my blog post for Avast here.