cve/2021/CVE-2021-1776.md

### [CVE-2021-1776](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1776)
![](https://img.shields.io/static/v1?label=Product&message=iOS%20and%20iPadOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=macOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2011.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2014.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%207.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Processing%20a%20maliciously%20crafted%20font%20file%20may%20lead%20to%20arbitrary%20code%20execution&color=brighgreen)

### Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. Processing a maliciously crafted font file may lead to arbitrary code execution.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon