Ac18 FirmwareOperating system · Tenda

CVE-2024-57579

CRITICAL · 9.8 CVSS v3.1 Published 2025-01-16
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 AC18 V15.03.05.19 was discovered to contain a stack overflow via the limitSpeedUp parameter in the formSetClientState 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 AC18 router firmware V15.03.05.19 in the formSetClientState function. The limitSpeedUp parameter is not properly bounds-checked before being copied to a stack buffer, allowing an attacker to overwrite return addresses and potentially execute arbitrary code.

MitigationApply vendor firmware update if available; otherwise, restrict administrative interface access to trusted networks only 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
Ac18 FirmwareOperating system
Affected:= 15.03.05.19

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 AC18 firmware version
    Access the router admin web interface and navigate to System Settings > Firmware Upgrade to view the current version, or use telnet/ssh to check /proc/version or run the 'ver' command if available.
    Affected if Firmware version is exactly 15.03.05.19
  2. Confirm vulnerable function exists
    Examine the firmware binary for the formSetClientState function, or verify the router responds to requests targeting this form handler through the web interface.
    Affected if The formSetClientState function is present in the firmware
  3. Verify web interface is accessible
    Confirm the router HTTP/HTTPS management interface is reachable on the network. This is required since the overflow is triggered via the limitSpeedUp parameter in the web form.
    Affected if Web management interface is accessible and firmware is version 15.03.05.19
  4. Check limitSpeedUp parameter processing
    Submit a request to the formSetClientState endpoint with the limitSpeedUp parameter. The vulnerability exists because this parameter is copied to a stack buffer without bounds checking.
    Affected if The limitSpeedUp parameter is accepted and processed by the form handler

The device is affected if it runs Tenda AC18 firmware version 15.03.05.19 and exposes the web interface with the vulnerable formSetClientState function that processes the limitSpeedUp parameter.

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 update if available; otherwise, restrict administrative interface access to trusted networks only to reduce attack surface.

Fix this in Ac18 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation3.0 h
  • Testing8.0 h
  • Review / QA3.0 h
18.0 hours of engineering $3,080
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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-2024-57579 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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