cve/2023/CVE-2023-33237.md

### [CVE-2023-33237](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-33237)
![](https://img.shields.io/static/v1?label=Product&message=TN-5900%20Series&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=1.0%3C%3D%203.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-287%20Improper%20Authentication&color=brighgreen)

### Description

TN-5900 Series firmware version v3.3 and prior is vulnerable to improper-authentication vulnerability. This vulnerability arises from inadequate authentication measures implemented in the web API handler, allowing low-privileged APIs to execute restricted actions that only high-privileged APIs are allowed This presents a potential risk of unauthorized exploitation by malicious actors. 

### POC

#### Reference
- https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230402-tn-5900-and-tn-4900-series-web-server-multiple-vulnerabilities

#### Github
- https://github.com/3sjay/vulns