cve/2023/CVE-2023-39240.md

### [CVE-2023-39240](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-39240)
![](https://img.shields.io/static/v1?label=Product&message=RT-AX55&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=RT-AX56U_V2&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%203.0.0.4.386_50460%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-134%20Use%20of%20Externally-Controlled%20Format%20String&color=brighgreen)

### Description

It is identified a format string vulnerability in ASUS RT-AX56U V2’s iperf client function API. This vulnerability is caused by lacking validation for a specific value within its set_iperf3_cli.cgi module. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ShielderSec/poc