512w FirmwareOperating system · Utt

CVE-2025-15090

CRITICAL · 9.8 CVSS v3.1 Published 2025-12-25
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 found in UTT 进取 512W up to 1.7.7-171114. This vulnerability affects the function strcpy of the file /goform/formConfigNoticeConfig. The manipulation of the argument timestart results in buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used.

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 web interface (firmware up to 1.7.7-171114). The strcpy function in /goform/formConfigNoticeConfig copies the 'timestart' parameter into a fixed-size buffer without bounds checking, allowing remote attackers to overflow the buffer and potentially achieve remote code execution.

MitigationApply vendor firmware update if available; otherwise, disable remote web management interface access, implement network segmentation, and monitor for exploitation attempts given the public exploit.

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
    Access the router's web admin interface and check the device info page, or look for 'UTT 512W' or 'UTT 进取 512W' labeling on the device hardware itself
    Affected if The device is a UTT 进取 512W router
  2. Determine the firmware version
    In the router web interface, navigate to System Status or similar admin page to view the firmware version, or check the build date shown in the admin panel
    Affected if The firmware version is 1.7.7-171114 or earlier, or the build date is on or before November 14, 2017
  3. Check if the web management interface is remotely accessible
    Verify the router's WAN-facing web interface is accessible by trying to reach the router's public IP on port 80/443 from an external network, or check the router's 'Remote Management' or 'Web Management' settings
    Affected if Remote web management is enabled and the admin interface is reachable from the WAN/internet
  4. Verify the vulnerable form exists
    Attempt to access the URI /goform/formConfigNoticeConfig on the router's web interface (requires authentication), or check if the 'Notice Config' or 'Notification' feature is present in the admin panel
    Affected if The formConfigNoticeConfig endpoint exists and the notification/notice configuration feature is present in the firmware

You are affected if you have a UTT 进取 512W router running firmware version 1.7.7-171114 or earlier, with the web interface remotely accessible and the notification configuration feature enabled.

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

Apply vendor firmware update if available; otherwise, disable remote web management interface access, implement network segmentation, and monitor for exploitation attempts given the public exploit.

Fix this in 512w Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,970
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-15090 — 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-2025-15090 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