CVE-2026-4163
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 · uneditedA vulnerability was detected in Wavlink WL-WN579A3 220323. This issue affects the function SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Performing a manipulation results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading the affected component is recommended.
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 confidenceCommand injection vulnerability in Wavlink WL-WN579A3 router firmware (220323) in the wireless.cgi POST request handler, specifically the SetName/GuestWifi function. Remote attackers can execute arbitrary OS commands via crafted input to this endpoint.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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 checksWork through these to decide whether this CVE applies to you.
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Identify the router modelCheck the device label or web interface for the exact model number (WL-WN579A3)Affected if Device is not a Wavlink WL-WN579A3 router
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Check the firmware versionAccess the router web admin interface, typically at 192.168.10.1, and look in Settings > System > Firmware Upgrade or Administration > Firmware versionAffected if Firmware version is 220323 (the affected version)
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Verify if remote administrative access is enabledIn the router web interface, check WAN access settings under Administration > Remote Management or similar; determine if the admin interface is accessible from the WAN/Internet sideAffected if Remote administrative access is enabled and the wireless.cgi endpoint is reachable from WAN
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Test for the vulnerable wireless.cgi endpointIf remote access is enabled, send a POST request to http://[router-ip]/wireless.cgi with a crafted payload in the SetName/GuestWifi parameter (do not execute, just verify the endpoint responds)Affected if The wireless.cgi endpoint responds to POST requests and accepts the SetName/GuestWifi function parameters
If the device is a Wavlink WL-WN579A3 running firmware version 220323 and has remote administrative access enabled, it is likely affected by this command injection vulnerability.
Generated from the published advisory. Verify against your own configuration.
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 dataUpgrade to patched firmware version immediately; if unavailable, disable remote administrative access or segment device behind firewall to limit exposure.
- Consultation3.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-4163 — 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 sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-4163 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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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