### [CVE-2017-7784](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7784)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

A use-after-free vulnerability can occur when reading an image observer during frame reconstruction after the observer has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ZihanYe/web-browser-vulnerabilities