[supposemaybe]

Ssh is shell, whereas wireguard is a vpn.

You will still be vulnerable as you can connect to an ssh server through your wireguard tunnel.

[d-z-m]

I don't think that's what OP is asking. I think OP is asking if wireguard functions could be hooked in the same way as sshd functions are in this exploit.

[circusfly]

Well, yes, I can, but unlike ssh which is open to the world, my VPN is only open to me and the family. It seems like that greatly reduces the potential attack surface.