### [CVE-2021-33617](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33617) ![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue) ![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen) ![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen) ### Description Zoho ManageEngine Password Manager Pro before 11.2 11200 allows login/AjaxResponse.jsp?RequestType=GetUserDomainName&userName= username enumeration, because the response (to a failed login request) is null only when the username is invalid. ### POC #### Reference - https://herolab.usd.de/security-advisories/usd-2021-0015/ - https://www.manageengine.com #### Github No PoCs found on GitHub currently.