P 660hn T1 FirmwareOperating system · Zyxel

CVE-2019-6725

CRITICAL · 9.8 CVSS v3.0 Published 2019-05-31
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
The rpWLANRedirect.asp ASP page is accessible without authentication on ZyXEL P-660HN-T1 V2 (2.00(AAKK.3)) devices. After accessing the page, the admin user's password can be obtained by viewing the HTML source code, and the interface of the modem can be accessed as admin.

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 confidence

Unauthenticated access to the rpWLANRedirect.asp ASP page on ZyXEL P-660HN-T1 V2 routers exposes the admin password in plaintext within the HTML source code, allowing full unauthorized admin access to the device management interface.

MitigationRestrict access to the router's web management interface to trusted networks only; if available, apply vendor firmware update; otherwise consider replacing the end-of-life device.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
P 660hn T1 FirmwareOperating system
Affected:= 2.00\(aakk.3\)

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:3.0/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the router model
    Access the router's web interface or check the device label to confirm the model is ZyXEL P-660HN-T1 V2
    Affected if The device is a ZyXEL P-660HN-T1 V2 router
  2. Check the firmware version
    Log into the router admin interface and navigate to Status or Management pages to view the firmware version, or check the device label for firmware version marking
    Affected if The firmware version is exactly 2.00(aakk.3)
  3. Access the vulnerable ASP page
    From a browser on a network connected to the router, navigate to http://[router-ip]/rpWLANRedirect.asp without providing any login credentials
    Affected if The page loads without requiring authentication
  4. Inspect HTML source for plaintext password
    Right-click on the loaded rpWLANRedirect.asp page, select 'View Page Source' or 'Inspect Element', and search for password-related fields or the actual admin password in plaintext
    Affected if The admin password is visible in plaintext within the HTML source code

The device is affected if it is a ZyXEL P-660HN-T1 V2 router running firmware version 2.00(aakk.3) and the rpWLANRedirect.asp page is accessible without authentication, exposing the admin password in the HTML source.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Restrict access to the router's web management interface to trusted networks only; if available, apply vendor firmware update; otherwise consider replacing the end-of-life device.

Fix this in P 660hn T1 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing2.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,900
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2019-6725 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-6725 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data