### [CVE-2021-20147](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20147)
![](https://img.shields.io/static/v1?label=Product&message=ManageEngine%20ADSelfService%20Plus&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%206116%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Observable%20Response%20Discrepancy&color=brightgreen)

### Description

ManageEngine ADSelfService Plus below build 6116 contains an observable response discrepancy in the UMCP operation of the ChangePasswordAPI. This allows an unauthenticated remote attacker to determine whether a Windows domain user exists.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/20142995/nuclei-templates
- https://github.com/cyb3r-w0lf/nuclei-template-collection