cve/2021/CVE-2021-21822.md

### [CVE-2021-21822](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21822)
![](https://img.shields.io/static/v1?label=Product&message=Foxit&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-416%3A%20Use%20After%20Free&color=brighgreen)

### Description

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1287

#### Github
- https://github.com/0xCyberY/CVE-T4PDF
- https://github.com/ARPSyndicate/cvemon