read_tmp and write_tmp in Inteno IOPSYS allow attackers to gain privileges after writing to /tmp/etc/smb.conf because /var is a symlink to /tmp.
- https://neonsea.uk/blog/2018/07/21/tmp-to-rce.html
- https://www.exploit-db.com/exploits/45089/
- https://github.com/nnsee/inteno-exploits