CVEs-PoC/2021/CVE-2021-21992.md

### [CVE-2021-21992](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21992)
![](https://img.shields.io/static/v1?label=Product&message=VMware%20vCenter%20Server%2C%20VMware%20Cloud%20Foundation&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=VMware%20vCenter%20Server(7.x%20before%207.0%20U2c%2C%206.7%20before%206.7%20U3o%20and%206.5%20before%206.5%20U3q)%20and%20VMware%20Cloud%20Foundation%20(4.x%20before%204.3%20and%203.x%20before%203.10.2.2)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=XML%20parsing%20denial-of-service%20vulnerability&color=brightgreen)

### Description

The vCenter Server contains a denial-of-service vulnerability due to improper XML entity parsing. A malicious actor with non-administrative user access to the vCenter Server vSphere Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash) may exploit this issue to create a denial-of-service condition on the vCenter Server host.

### POC

#### Reference
- https://www.vmware.com/security/advisories/VMSA-2021-0020.html

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