CVEs-PoC/2021/CVE-2021-31859.md

### [CVE-2021-31859](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31859)
![](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

Incorrect privileges in the MU55 FlexiSpooler service in YSoft SafeQ 6 6.0.55 allows local user privilege escalation by overwriting the executable file via an alternative data stream.

### POC

#### Reference
- https://www.ysoft.com/en
- https://www.ysoft.com/en/legal/ysoft-safeq-flexispooler

#### Github
No PoCs found on GitHub currently.