CTD-000180

AD user with blank password

Critical
Active Directory
Credential Access Initial Access
v6

Signature Identity

CTD-000180
Threat ID
6
Version
IOA-IOC-IOE
Indicator Type

Threat Description

Accounts with blank passwords pose a critical security risk. Without any form of authentication, these accounts are highly vulnerable to unauthorized access. Attackers can easily exploit such accounts to bypass password policies, gain access to sensitive data, and escalate privileges within the environment.

Cayosoft identifies accounts with empty password fields and flags them to ensure that no user account remains unsecured due to the absence of a password.

Cayosoft Guardian is designed with strict security principles to protect sensitive credential data within customer environments. Cayosoft Guardian does not store or transmit password hashes. All password-related comparison operations are executed locally on your domain controllers, ensuring that password hashes remain within your secure environment and are never sent to the internet or external systems.

This architecture ensures that password hashes are not collected, exported, or exposed outside your Active Directory domain controllers during backup, recovery, or change monitoring operations.

MITRE ATT&CK: Attack Tactics

Credential Access Initial Access

D3FEND: Defend Tactics

D3-PR (Password Rotation)

Remediation

  1. Enforce complexity requirements, length, and expiration settings through Group Policy to enhance security.
  2. Use Active Directory Users and Computers to locate active and inactive accounts.
  3. Reset passwords for compromised or inactive accounts and disable or remove unnecessary accounts to reduce security risks.

Frequently Asked Questions

What does AD user with blank password mean?

An Active Directory user account has no password set, allowing attackers to sign in without any form of authentication and gain access to sensitive data.

AD user with blank password is rated critical severity because an account without a password enables attackers to bypass password policies, escalate privileges, and move laterally within the environment. This allows them to access sensitive data and increase potential damage.

Attackers can sign in using an AD user account with a blank password, gaining access to sensitive data, moving laterally, and bypassing security controls. This increases the potential damage and allows them to escalate privileges within the environment.

Cayosoft Guardian continuously monitors Active Directory for accounts without passwords, providing visibility into exposed accounts so administrators can take action to secure the account and limit exposure to sensitive data.

Cayosoft Guardian alerts administrators to reset passwords for compromised or inactive accounts, disables or removes unnecessary accounts, and provides visibility into exposed accounts, limiting exposure to sensitive data and reducing the attack surface.

Stop AD Threats As They Happen

Cayosoft Protector provides continuous monitoring and real-time alerts across your entire Microsoft Identity stack

Classification
Systems
Active Directory
Themes
Account protection
Attack Tactics
Credential Access Initial Access
Defend Tactics
D3-PR (Password Rotation)
Indicator Types
IOA IOC IOE
Related Threats
CTD-000139
Kerberos Constrained Delegation: krbtgt Risks
Critical
CTD-000122
Active Directory Schema Update Permission Risks
Critical