### [CVE-2021-33536](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33536)
![](https://img.shields.io/static/v1?label=Product&message=IE-WL(T)-BL-AP-CL-XX&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=IE-WL(T)-VL-AP-CL-XX&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=IE-WL-BL-AP-CL-EU%20(2536600000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WL-BL-AP-CL-US%20(2536660000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WL-VL-AP-BR-CL-EU%20(2536680000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WL-VL-AP-BR-CL-US%20(2536700000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WLT-BL-AP-CL-EU%20(2536650000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WLT-BL-AP-CL-US%20(2536670000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WLT-VL-AP-BR-CL-EU%20(2536690000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=IE-WLT-VL-AP-BR-CL-US%20(2536710000)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-191%20Integer%20Underflow%20(Wrap%20or%20Wraparound)&color=brightgreen)

### Description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable denial-of-service vulnerability exists in ServiceAgent functionality. A specially crafted packet can cause an integer underflow, triggering a large memcpy that will access unmapped or out-of-bounds memory. An attacker can send this packet while unauthenticated to trigger this vulnerability.

### POC

#### Reference
- https://cert.vde.com/en-us/advisories/vde-2021-026

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