dbcve.org
520w FirmwareOperating system · Utt

CVE-2025-14141

CRITICAL · 9.8 CVSS v3.1 Published 2025-12-06
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
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 flaw has been found in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formArpBindConfig. Executing manipulation of the argument pools can lead to buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. 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

Buffer overflow vulnerability in UTT 进取 520W router firmware 1.7.7-180627. The strcpy function in /goform/formArpBindConfig does not perform bounds checking on the 'pools' argument, allowing an attacker to overflow the buffer by providing overly long input. This is remotely exploitable without authentication given the network-accessible management interface.

MitigationSince the vendor did not respond to disclosure, apply network segmentation to isolate the router's management interface from untrusted networks; consider replacing the device if no firmware patch becomes available. If a patch is released, validate it in a lab environment before deployment.

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
520w FirmwareOperating system
Affected:= 1.7.7-180627

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 firmware version
    Access the router's web management interface and navigate to System Status or Firmware Version page. Alternatively, check HTTP response headers or the footer of any management page for the firmware build number.
    Affected if The firmware version displayed is exactly 1.7.7-180627
  2. Verify vulnerable endpoint exists
    Send an HTTP GET request to http://<router-ip>/goform/formArpBindConfig. A valid endpoint will return a response rather than a 404 error.
    Affected if The endpoint responds (indicating the vulnerable form exists on the device)
  3. Confirm management interface is network-accessible
    Check if the router's web management port (typically 80 or 443) is listening on an IP address reachable from untrusted networks. Use 'netstat -an' on the router or scan the router's external IP from a remote location.
    Affected if The management interface is accessible from networks other than trusted local networks

A user is affected if their Utt 520w router runs firmware version 1.7.7-180627 and the /goform/formArpBindConfig endpoint is network-accessible.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Since the vendor did not respond to disclosure, apply network segmentation to isolate the router's management interface from untrusted networks; consider replacing the device if no firmware patch becomes available. If a patch is released, validate it in a lab environment before deployment.

Recommended fix Low confidence
  1. No vendor-provided fix is available. The vendor was contacted but did not respond.
  2. Monitor the vendor website (utt.com.cn) for any firmware updates that may address this vulnerability.
  3. Consider network-based mitigations such as restricting access to the device's web management interface to trusted IPs only, or placing the device behind a firewall with controlled access.
  4. If the device is end-of-life and no longer supported, replace it with a currently maintained alternative.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in 520w Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,680
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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-2025-14141 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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