### [CVE-2021-21958](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21958)
![](https://img.shields.io/static/v1?label=Product&message=Hancom&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-122%3A%20Heap-based%20Buffer%20Overflow&color=brighgreen)

### Description

A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potential arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1386

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