cve/2021/CVE-2021-25659.md

### [CVE-2021-25659](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25659)
![](https://img.shields.io/static/v1?label=Product&message=Automation%20License%20Manager%205&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Automation%20License%20Manager%206&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=All%20versions%20%3C%20V6.0%20SP9%20Update%202%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=All%20versions%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-400%3A%20Uncontrolled%20Resource%20Consumption&color=brightgreen)

### Description

A vulnerability has been identified in Automation License Manager 5 (All versions), Automation License Manager 6 (All versions < V6.0 SP9 Update 2). Sending specially crafted packets to port 4410/tcp of an affected system could lead to extensive memory being consumed and as such could cause a denial-of-service preventing legitimate users from using the system.

### POC

#### Reference
- https://cert-portal.siemens.com/productcert/pdf/ssa-158827.pdf

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