On Franklin Fueling Systems TS-550 evo 18.104.22.16832 devices, the roleDiag user, which can be obtained by exploiting CVE-2013-7247, has the ability to upload files to the server hosting the web service. As no sanitization checks are in place, an attacker can upload a malicious payload.
CWE-862 - Missing Authorization
The missing authorization vulnerability occurs when a software program allows users to access privileged parts of the program without verifying the user credentials. Impact of such a vulnerability depends on the resources employed by the software, ranging from account takeover to sensitive information exposure, denial of service, and complete system takeover.