### [CVE-2021-30786](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30786)
![](https://img.shields.io/static/v1?label=Product&message=iOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=macOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2011.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2014.7%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Opening%20a%20maliciously%20crafted%20PDF%20file%20may%20lead%20to%20an%20unexpected%20application%20termination%20or%20arbitrary%20code%20execution&color=brighgreen)

### Description

A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.

### POC

#### Reference
No PoCs from references.

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