cve/2006/CVE-2006-4020.md

### [CVE-2006-4020](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4020)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

scanf.c in PHP 5.1.4 and earlier, and 4.4.3 and earlier, allows context-dependent attackers to execute arbitrary code via a sscanf PHP function call that performs argument swapping, which increments an index past the end of an array and triggers a buffer over-read.

### POC

#### Reference
- http://securityreason.com/securityalert/1341

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