CVE-2025-67446
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImproper Authentication (Authentication Bypass) exists in Neterbit NW-431F Router 20241014-IR03 and before. The router uses a weak/predictable cookie value for authentication. By modifying the cookie value (e.g., setting it to "admin"), an attacker can bypass the authentication schema and gain unauthorized access to admin functionalities.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe Neterbit NW-431F router uses a weak, predictable cookie value for session authentication. An attacker can bypass authentication entirely by modifying the cookie to a known value like 'admin', granting unauthorized admin access to the device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm router modelLog into the router admin interface or check the device label/sticker to verify the exact model is Neterbit NW-431F. Alternatively, inspect HTTP response headers or the login page source for model identification strings.Affected if The device is a Neterbit NW-431F router and the web management interface is accessible.
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Check remote administration exposureReview the router's administrative settings to determine if the web interface is accessible from WAN/remote networks. Look for 'Remote Management', 'Remote Access', or 'Web Wizard' settings that enable external access.Affected if Remote administration is enabled and the management interface is reachable from untrusted networks.
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Inspect authentication cookie behaviorUsing a web browser or HTTP tool, access the router login page and observe the cookie values set by the server. Attempt to manually set an authentication cookie to the value 'admin' and access protected pages without providing valid credentials.Affected if Setting a cookie with value 'admin' grants access to administrative functions without legitimate authentication.
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Review admin session logsCheck the router's system logs, security logs, or access logs for any administrative sessions that originated from unexpected IP addresses or that do not correspond to known legitimate administrator activity.Affected if Administrative sessions appear from unfamiliar IP addresses or at times when no authorized user accessed the interface.
If the device is a Neterbit NW-431F with its web interface exposed and the authentication cookie can be set to 'admin' to gain admin access, the environment is affected by this CVE.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedIf available, apply vendor firmware updates. Until a patch is released, restrict router management interfaces from external network access using firewall rules and disable remote management if possible. Contact Neterbit for patch availability.
Any Neterbit NW-431F firmware release newer than 20241014-IR03 that addresses the weak cookie authentication vulnerability
- Access the router's web administration interface or management console
- Navigate to the firmware update or system settings section
- Check the current firmware version to confirm it is 20241014-IR03 or earlier
- Download the updated firmware version from Neterbit's official support website or trusted source
- Follow the vendor's published firmware upgrade procedure to apply the update
- After rebooting, verify the new firmware version is installed
- Confirm the authentication mechanism has been improved by testing the cookie-based authentication
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-67446 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-67446 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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