Security teams should identify every default credential, especially on internet-facing devices and administrative root accounts, then replace them with unique passwords and enforce banned-password controls. That first step reduces the easiest path attackers use to gain privileged access. From there, teams should add monitoring, rotation, and privileged access management so credentials are not static or broadly reusable.
Why the first move is inventory, not just reset
The right first step is to find every place a default credential still exists, then treat each one as a live privileged access path until it is replaced. That includes internet-facing edge devices, admin root accounts, vendor-managed consoles, and any account that can reach sensitive systems or configuration interfaces. If teams skip discovery, they usually miss the highest-risk exposures and only fix the obvious ones.
Default credentials are dangerous because they are predictable, widely documented, and often shared across many deployed systems. On edge devices, the same password may unlock remote administration, configuration export, or a jump point into the internal network. On privileged accounts, one unchanged password can override other controls that assume the account is already trustworthy.
Teams should also distinguish between a password that is merely weak and one that is still factory-default. The latter is an access-control failure, not just a hygiene issue, because the credential may be known to attackers before they ever touch the environment. That is why the initial work is identification and replacement, not debate about whether the device is internet-facing enough to matter.
What replacement must look like for privileged and edge access
Once the default credential is found, replace it with a unique password that is not reused anywhere else and enforce banned-password controls so the old value, vendor defaults, and obvious variants cannot come back. For accounts with administrative reach, the replacement should be paired with privilege review, because a secure password on an overpowered account still leaves a large blast radius.
For internet-facing devices, the change should also be validated from the outside. Teams need to confirm that the default login no longer works, that no backup account still uses the same value, and that local or remote management paths cannot be reached with inherited factory access. If the device supports it, move to stronger authentication and restrict administrative exposure to approved management paths.
At scale, a password reset campaign without ownership, verification, and exception handling quickly becomes a false sense of progress. Use an explicit asset list, assign a responsible team for every device class, and require proof that the old credential was removed. NHIMG’s Ultimate Guide to NHIs is useful here because the same management problem often appears in service accounts, device accounts, and other non-human credentials that also need discovery, rotation, and offboarding discipline.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while CIS Controls v8, NIST CSF 2.0 and NIST SP 800-63 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | 6 — Access Control Management | Default privileged passwords are an access-control weakness that CIS prioritises. |
| 5 — Account Management | Finding and replacing default credentials depends on complete account inventory and control. | |
| 8 — Audit Log Management | Monitoring is needed to detect use of any remaining exposed administrative credentials. | |
| Recommendation — Remove default privileged access paths and enforce least privilege with periodic access review. Inventory all privileged accounts and eliminate any factory-default or shared credentials. Enable logging on privileged and edge management access and alert on default-credential misuse. | ||
| OWASP Non-Human Identity Top 10 | NHI-01 — Non-Human Identity Inventory and Discovery | Default credentials on devices and admin accounts are identity assets that must be discovered first. |
| NHI-03 — Secrets Hygiene and Rotation | Replacing default passwords with unique values is a core secrets-hygiene action. | |
| NHI-05 — Privileged Access and Least Privilege | Privileged accounts and edge admin paths need least-privilege hardening after reset. | |
| Recommendation — Discover every privileged credential-bearing identity before rotating or remediating it. Rotate default credentials to unique secrets and block banned or reused password values. Restrict privileged access to the minimum required and remove standing broad admin rights. | ||
| NIST CSF 2.0 | PR.AA — Identity Management, Authentication and Access Control | The question is about replacing weak authentication and controlling privileged access. |
| DE.CM — Continuous Monitoring | Monitoring is the follow-on control for exposed credentials and suspicious admin use. | |
| PR.PT — Protective Technology | Edge devices need protective configuration and hardening once defaults are removed. | |
| Recommendation — Strengthen authentication and access control for privileged accounts and device administration. Monitor privileged and edge-device access for signs of default-credential use or compromise. Harden exposed devices so administrative access is restricted to approved management paths. | ||
| NIST SP 800-63 | 1 — Digital Identity Models and Authentication Levels | The answer depends on replacing weak authenticator practice with stronger account authentication. |
| Recommendation — Use stronger authenticators for privileged access and avoid password-only reliance where feasible. | ||
Practitioner Guidance
What to prioritise: Start with externally reachable devices and any account that can change configuration, manage users, or pivot into another environment. If an exposed default password exists on a root or admin path, treat it as an active compromise risk until proven otherwise.
What to verify: Confirm the new password is unique, the old default no longer works, and there are no hidden management interfaces, vendor backdoors, or emergency accounts still using the factory value. For shared infrastructure, verify each device independently rather than assuming one successful reset covered the fleet.
What good looks like: A complete inventory of default-credential exposures, documented replacement for each one, and a follow-up control set that includes monitoring, rotation, and privileged access management so the same mistake does not recur.
Practitioner takeaway: The first job is to remove the easiest authenticated path, not to wait for evidence of abuse; if the credential is default and privileged, assume it is already part of the attacker playbook.
Related resources from NHI Mgmt Group
- How should security teams govern non-human identities alongside human accounts?
- How should security teams govern Active Directory service accounts?
- How should security teams handle browser-stored passwords for privileged accounts?
- What should security teams inventory before replacing passwords with phishing-resistant MFA?
