Improper Input Validation in Teltonika firmware TRB2_R_00.02.04.01 allows a remote, authenticated attacker to gain root privileges by uploading a malicious package file.
https://www.tenable.com/security/research/tra-2020-48
https://www.tenable.com/security/research/tra-2020-48
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5772