512w FirmwareOperating system · Utt

CVE-2025-14534

CRITICAL · 9.8 CVSS v3.1 Published 2025-12-11
Fix available
A fix is available. Upgrade to after 1.7.7-171114 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit 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
A vulnerability was determined in UTT 进取 512W up to 3.1.7.7-171114. This impacts the function strcpy of the file /goform/formNatStaticMap of the component Endpoint. Executing manipulation of the argument NatBind can lead to buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

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

A buffer overflow vulnerability exists in the UTT 进取 512W router's web interface (file /goform/formNATStaticMap) where the strcpy function copies the user-controlled NatBind argument without bounds checking. This allows remote attackers to overflow a buffer by supplying an overly long argument, potentially achieving remote code execution given the CVSS 9.8 critical rating.

MitigationSince the vendor did not respond to disclosure and no patch exists, immediately restrict access to the router's web management interface using firewall rules or ACLs, disable remote management if exposed to the internet, and consider replacing the end-of-life device with a supported model.

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
512w FirmwareOperating system
Affected:<= 1.7.7-171114

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 checks

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

  1. Identify the router model
    Check the device label or access the router's web interface and look for the model name 'UTT 进取 512W' or 'Utt 512w' in the system information page
    Affected if The device is a UTT 进取 512W router
  2. Check the firmware version
    Access the router's web interface, navigate to the Status or System Info page, and locate the firmware version number
    Affected if The firmware version is 1.7.7-171114 or earlier
  3. Verify the web interface is accessible
    Attempt to access the router's web interface by entering the router's IP address in a web browser
    Affected if The web management interface is reachable on the network
  4. Confirm the vulnerable form endpoint exists
    Check if the URL path /goform/formNATStaticMap responds by accessing http://[router-ip]/goform/formNATStaticMap in a browser or with curl
    Affected if The formNATStaticMap endpoint is accessible and responds to requests
  5. Determine if remote management is exposed
    Check the router's web interface under Advanced Settings or Administration for 'Remote Management' or 'Web Management' access settings to see if it is enabled for WAN access
    Affected if Remote management is enabled and the web interface is accessible from the internet

You are affected if you are using a UTT 进取 512W router with firmware version 1.7.7-171114 or earlier, and the router's web interface with the formNATStaticMap endpoint is accessible to attackers.

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
Upgrade available Upgrade to a release after 1.7.7-171114
Interim mitigation

Since the vendor did not respond to disclosure and no patch exists, immediately restrict access to the router's web management interface using firewall rules or ACLs, disable remote management if exposed to the internet, and consider replacing the end-of-life device with a supported model.

Fix this in 512w Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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Scan for this in your stack

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dbcve dependency scanner

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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-2025-14534 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