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Ac10u FirmwareOperating system · Tendacn

CVE-2023-44018

CRITICAL · 9.8 CVSS v3.1 Published 2023-09-27
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
Tenda AC10U v1.0 US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01 was discovered to contain a stack overflow via the domain parameter in the add_white_node function.

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

Stack-based buffer overflow in Tenda AC10U v1.0 firmware (US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01). The vulnerability exists in the add_white_node function where the domain parameter is not properly bounds-checked before being copied to a stack-allocated buffer, allowing potential remote code execution or denial of service.

MitigationApply vendor firmware patch when available. Until then, disable remote web management, restrict administrative interface access to trusted IPs only via firewall rules, and monitor for unauthorized access attempts.

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
Ac10u FirmwareOperating system
Affected:= 15.03.06.49_multi_tde01

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. Confirm the firmware version of the Tenda AC10U device
    Log into the router admin panel and navigate to System Settings > Firmware Upgrade, or check the version label on the device itself. Alternatively, use the router's web interface status page or check via telnet/SSH if enabled.
    Affected if The firmware version is exactly 15.03.06.49_multi_tde01 (US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01)
  2. Verify the router's web management interface is accessible from the network
    Attempt to access the router's IP address on ports 80 or 443 from a remote host. Check firewall rules or port forwarding configurations that may expose the admin interface externally.
    Affected if The web management interface is reachable from untrusted networks (not just the local LAN)
  3. Identify if the add_white_node function is reachable
    The add_white_node function is part of the whitelist/whitelisting feature. Check if the router has a Domain Whitelist or Access Control feature in the web interface under sections like Access Control, Firewall, or Parental Controls.
    Affected if The whitelist/whitelisting feature exists and is accessible in the router firmware
  4. Inspect HTTP requests to the router's/cgi-bin/ directory
    Use a web proxy or curl to examine if the router responds to requests at endpoints like /cgi-bin/ or specific API calls related to whitelist management. Look for parameters named 'domain' in POST requests.
    Affected if The router accepts HTTP POST requests with a 'domain' parameter to the CGI endpoint
  5. Check for signs of exploitation or anomalous behavior
    Review router logs for failed authentication attempts, unusual DNS proxy configurations, or unexpected processes. Monitor network traffic for suspicious outbound connections from the router.
    Affected if Logs show evidence of attempts to invoke the whitelist function or unexpected configurations

A user is affected if they are running Tenda AC10U firmware version 15.03.06.49_multi_tde01 AND the router's web interface is accessible (either locally or remotely) with the whitelist feature available.

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 when available. Until then, disable remote web management, restrict administrative interface access to trusted IPs only via firewall rules, and monitor for unauthorized access attempts.

Fix this in Ac10u Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA3.0 h
17.0 hours of engineering $3,020
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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-2023-44018 in production — separate from our analysis above.

No notes yet

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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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