cve/2021/CVE-2021-26777.md

### [CVE-2021-26777](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26777)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

Buffer overflow vulnerability in function SetFirewall in index.cgi in CIRCUTOR COMPACT DC-S BASIC smart metering concentrator Firwmare version CIR_CDC_v1.2.17, allows attackers to execute arbitrary code.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Ell0/plc_concentrator_vulns