cve/2021/CVE-2021-1657.md

### [CVE-2021-1657](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1657)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%201507&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%201607&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%201803&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%201809&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%201909&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%202004&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%2010%20Version%2020H2&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%207%20Service%20Pack%201&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%207&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%208.1&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202008%20%20Service%20Pack%202&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202008%20R2%20Service%20Pack%201%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202008%20R2%20Service%20Pack%201&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202008%20Service%20Pack%202%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202008%20Service%20Pack%202&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202012%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202012%20R2%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202012%20R2&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202012&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202016%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202016&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202019%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%202019&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%20version%202004&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%20version%2020H2&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Windows%20Server%2C%20version%201909%20(Server%20Core%20installation)&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=10.0.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.0.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.1.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.2.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.3.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Remote%20Code%20Execution&color=brighgreen)

### Description

Windows Fax Compose Form Remote Code Execution Vulnerability

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/VulnerabilityResearchCentre/patch-diffing-in-the-dark