A group of academics from Ruhr University Bochum and New York University Abu Dhabi have uncovered security flaws in 4G LTE and 5G networks that could potentially allow hackers to impersonate users on the network and even sign up for paid subscriptions on their behalf. The IMP4GT attack exploits the mutual authentication method used by the mobile phone and the network’s base station to verify their respective identities. The vulnerability impacts all devices that communicate with LTE, which includes all smartphones, tablets, and IoT devices currently being sold in the market.
Source: https://thehackernews.com/2020/02/lte-network-4g-vulnerability.html