Ac8 FirmwareOperating system · Tenda

CVE-2025-12618

CRITICAL · 9.8 CVSS v3.1 Published 2025-11-03
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
A vulnerability has been found in Tenda AC8 16.03.34.06. This impacts an unknown function of the file /goform/DatabaseIniSet. The manipulation of the argument Time leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may 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 · moderate confidence

A buffer overflow vulnerability exists in Tenda AC8 router firmware version 16.03.34.06. The /goform/DatabaseIniSet endpoint does not properly validate the 'Time' argument, allowing an attacker to overflow a buffer. This remote, likely unauthenticated attack achieves critical severity (CVSS 9.8) and could enable remote code execution.

MitigationApply vendor firmware patch if available; otherwise restrict management interface to trusted networks or disable remote administration, and monitor for indicators of compromise.

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
Ac8 FirmwareOperating system
Affected:= 16.03.34.06

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
    Log into the router web interface or check the device label to confirm it is a Tenda AC8 model
    Affected if The device is not a Tenda AC8 router, this CVE does not apply
  2. Check the firmware version
    Navigate to the router admin panel (typically at 192.168.0.1), go to System Settings or Administration section, and locate the firmware version information. Alternatively, check via CLI if telnet/ssh is enabled
    Affected if The firmware version is exactly 16.03.34.06 - only this specific version is affected
  3. Determine if the web management interface is exposed
    Check router settings under Advanced or Security settings to see if remote web management is enabled (often labeled as 'Remote Management' or 'Web Management Remote'). Also verify network exposure by checking WAN IP accessibility on port 80/8080
    Affected if Remote management is enabled and the router is accessible from the WAN side, the vulnerable endpoint can be reached externally
  4. Verify the DatabaseIniSet endpoint exists
    Attempt to access http://[router-ip]/goform/DatabaseIniSet via HTTP request (note: this is for detection purposes to confirm the endpoint exists on the device)
    Affected if The endpoint responds (even with an error), it indicates the vulnerable function is present on the device

The device is affected only if it is a Tenda AC8 router running firmware version 16.03.34.06 with the web management interface accessible (locally or remotely).

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

Apply vendor firmware patch if available; otherwise restrict management interface to trusted networks or disable remote administration, and monitor for indicators of compromise.

Fix this in Ac8 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
25.0 hours of engineering $4,400
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-12618 — 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-2025-12618 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
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