### [CVE-2021-21798](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21798)
![](https://img.shields.io/static/v1?label=Product&message=Nitro%20Pro&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Nitro%20Pro%2013.31.0.605%20%2C%20Nitro%20Pro%2013.33.2.645%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-562%3A%20Return%20of%20Stack%20Variable%20Address&color=brightgreen)

### Description

An exploitable return of stack variable address vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a stack variable to go out of scope, resulting in the application dereferencing a stale pointer. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger the vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1267

#### Github
- https://github.com/ARPSyndicate/cve-scores