Ax3 FirmwareOperating system · Tenda

CVE-2025-69762

CRITICAL · 9.8 CVSS v3.1 Published 2026-01-21
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
Tenda AX3 firmware v16.03.12.11 contains a stack overflow in formSetIptv via the list parameter, which can cause memory corruption and enable remote code execution.

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 stack-based buffer overflow vulnerability exists in Tenda AX3 firmware v16.03.12.11 within the formSetIptv web interface function. The 'list' parameter lacks proper bounds checking, allowing an attacker to overflow the stack buffer and overwrite return addresses, leading to arbitrary code execution.

MitigationApply vendor firmware updates when available; until then, restrict administrative web interface access to trusted networks or disable remote management to reduce attack surface.

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
Ax3 FirmwareOperating system
Affected:= 16.03.12.11

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 Tenda AX3 firmware version
    Log into the router web management interface and navigate to System Settings > Firmware Upgrade, or check the device label/sticker. Alternatively, access the device via telnet/SSH if available and check /etc/version or use 'cat /proc/firmware_info' or similar commands provided by the firmware.
    Affected if The installed firmware version is exactly 16.03.12.11
  2. Confirm device is a Tenda AX3
    Verify the model number through the router web interface (usually on the status page or System Settings > Device Info), or physically inspect the device label.
    Affected if The device model is Tenda AX3 and firmware is 16.03.12.11
  3. Check if web management interface is enabled
    Access the router at its default IP (commonly 192.168.0.1 or 192.168.1.1) via HTTP/HTTPS. Verify you can reach the login page. Check System Settings > System Management or similar for 'Remote Management' or 'Web Management' settings.
    Affected if The web interface is accessible and responds to requests
  4. Verify IPTV feature availability
    In the router web interface, look for IPTV or Multicast settings, typically under Advanced Settings, Network, or WAN settings. The vulnerable function formSetIptv handles IPTV configuration.
    Affected if IPTV or multicast settings are present and configurable in the web interface

A user is affected if they are running Tenda AX3 firmware version 16.03.12.11 and have the web management interface accessible, regardless of IPTV feature configuration since the vulnerable formSetIptv function is exposed through the web interface.

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 updates when available; until then, restrict administrative web interface access to trusted networks or disable remote management to reduce attack surface.

Fix this in Ax3 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-69762 — 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-2025-69762 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