> For the complete documentation index, see [llms.txt](https://pnpt.adot8.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pnpt.adot8.com/external-pentest-playbook/common-pentest-findings/insufficient-authentication-controls.md).

# Insufficient  Authentication Controls

## Overview

**Insufficient  Authentication Controls** usually ties into not having **MFA** enforced. If there is no **MFA** or a way to bypass it the severity rating is **High** at a minimum.

{% hint style="info" %}
If you're not getting access anywhere with your pentest and can't tell if they're using MFA, you can ask the client if they have it enforced or not so you can include it on your report if they don't have it in writing from them.
{% endhint %}

## Example 1

<figure><img src="/files/8T5E1yNRGa5FSvYmzhY8" alt=""><figcaption><p>MFA bypass via MailSniper and a vulnerable on-prem Exchange server</p></figcaption></figure>

<figure><img src="/files/Jnaj3REZgPycKKM3WqSk" alt=""><figcaption><p>MFA bypass via MailSniper and a vulnerable on-prem Exchange server</p></figcaption></figure>

## Example 2

<figure><img src="/files/FyKZTnnh7tMPydbcIkPq" alt=""><figcaption><p>MFA wasn't enforced on all applications leaving security holes</p></figcaption></figure>