CVEs-PoC/2021/CVE-2021-20987.md

### [CVE-2021-20987](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20987)
![](https://img.shields.io/static/v1?label=Product&message=EtherNet%2FIP%20Core%20V2&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=PCV%2FPXV%2FPGV&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=WCS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=PXV100-F200-B25-V1D%2C%20PXV100I-F200-B25-V1D%2C%20PCV100-F200-B25-V1D-6011-6720%2C%20PCV50-F200-B25-V1D%2C%20PCV80-F200-B25-V1D%2C%20PCV100-F200-B25-V1D-6011%3C%3D%20V1.10.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=V2%3C%20V2.13.0.21%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=WCS3B-LS510%2C%20WCS3B-LS510H%2C%20WCS3B-LS510D%2C%20WCS3B-LS510DH%2C%20WCS3B-LS510H-OM%2C%20WCS3B-LS510DH-OM%2C%20WCS3B-LS510D-OM%2C%20WCS3B-LS510-OM%3C%3D%20V1.2.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-787%20Out-of-bounds%20Write&color=brighgreen)

### Description

A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.

### POC

#### Reference
- https://cert.vde.com/en-us/advisories/vde-2021-007

#### Github
No PoCs found on GitHub currently.