How vulnerable is ADB over wifi now that WPA2 is cracked? Could hackers MITM/inject commands I am sending from my pc to my phone? My Windows PC is patched but no official fix is available for Android yet.
Some clarification: WPA2 is not cracked. The WPA2 protocol is mathematically secure however an implementation oversight in a few OS's allows for some nasty consequences with a local attacker. WPA2 can continue to be used for the foreseeable future so long as you update your devices.
ADB is fine so long as your device is >4.2.2 (which as far as I know is the only vulnerable range for Android?).
ADB Authentication. Since Android 4.2.2, connections to ADB are authenticated with an RSA keypair. This prevents unauthorized use of ADB where the attacker has physical access to a device.
Unless the attacker steals the keypair their only option is to trick you into authorizing a new device which really isn't anything new or novel.