Wi-Fi 7 quietly took off while everyone was looking at AI
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https://web.archive.org/web/20151113152528/http://www.airtightnetworks.com/WPA2-Hole196
"the group temporal key (GTK) that is shared among all authorized clients in a WPA2 network. In the standard behavior, only an AP is supposed to transmit group-addressed data traffic encrypted using the GTK and clients are supposed to decrypt that traffic using the GTK. However, nothing in the standard stops a malicious authorized client from injecting spoofed GTK-encrypted packets! Exploiting the vulnerability, an insider (authorized user) can sniff and decrypt data from other authorized users as well as scan their Wi-Fi devices for vulnerabilities, install malware and possibly compromise those devices.
In short, this vulnerability means that inter-user data privacy among authorized users is inherently absent over the air in a WPA2-secured network. "
https://en.wikipedia.org/wiki/Wi-Fi_Protected_Access#Security_issues
" Predictable Group Temporal Key (GTK)
In 2016 it was shown that the WPA and WPA2 standards contain an insecure expository random number generator (RNG). Researchers showed that, if vendors implement the proposed RNG, an attacker is able to predict the group key (GTK) that is supposed to be randomly generated by the access point (AP). Additionally, they showed that possession of the GTK enables the attacker to inject any traffic into the network, and allowed the attacker to decrypt unicast internet traffic transmitted over the wireless network. They demonstrated their attack against an Asus RT-AC51U router that uses the MediaTek out-of-tree drivers, which generate the GTK themselves, and showed the GTK can be recovered within two minutes or less. Similarly, they demonstrated the keys generated by Broadcom access daemons running on VxWorks 5 and later can be recovered in four minutes or less, which affects, for example, certain versions of Linksys WRT54G and certain Apple AirPort Extreme models. Vendors can defend against this attack by using a secure RNG. By doing so, Hostapd running on Linux kernels is not vulnerable against this attack and thus routers running typical OpenWrt or LEDE installations do not exhibit this issue.[54] "