dbcve.org
Ac18 FirmwareOperating system · Tenda

CVE-2022-44177

CRITICAL · 9.8 CVSS v3.1 Published 2022-11-21
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
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 is vulnerable to Buffer Overflow via function formWifiWpsStart.

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

Tenda AC18 V15.03.05.19 contains a buffer overflow vulnerability in the formWifiWpsStart function, which handles WPS (Wi-Fi Protected Setup) operations. The lack of bounds checking on user-supplied input allows attackers to overflow buffers and potentially execute arbitrary code with elevated privileges on the device.

MitigationApply any available firmware update from Tenda. If no patch exists, disable WPS functionality on the router and implement network segmentation to limit exposure to untrusted networks.

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 device model
    Check if the router is a Tenda AC18 model by accessing the admin interface or checking the device label
    Affected if Device is not a Tenda AC18, this CVE does not apply
  2. Check firmware version
    Access the router admin panel (typically at 192.168.0.1), navigate to System Settings or Administration section, and locate the firmware version information
    Affected if Firmware version is not exactly 15.03.05.19 (only this specific version is affected)
  3. Confirm WPS is enabled
    Access the router admin panel and check Wireless Settings or Wi-Fi Protected Setup (WPS) configuration. WPS is typically found under wireless security or advanced wireless settings
    Affected if WPS functionality is disabled on the device - the vulnerable formWifiWpsStart function would not be reachable

The device is affected only if it is a Tenda AC18 router running exactly firmware version 15.03.05.19 with WPS functionality 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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply any available firmware update from Tenda. If no patch exists, disable WPS functionality on the router and implement network segmentation to limit exposure to untrusted networks.

Fix this in Ac18 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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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-2022-44177 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
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