Zyxel VMG1312-B10D 5.13AAXA.8 is susceptible to local file inclusion. A remote unauthenticated attacker can send a specially crafted URL request containing “dot dot” sequences (/../), conduct directory traversal attacks, and view arbitrary files.
View the template here CVE-2018-19326.yaml
References:
https://www.zyxel.com/homepage.shtml