CVE-2026-2529
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 security flaw has been discovered in Wavlink WL-WN579A3 up to 20210219. Affected by this issue is the function DeleteMac of the file /cgi-bin/wireless.cgi. The manipulation of the argument delete_list results in command injection. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.
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 confidenceCommand injection vulnerability in Wavlink WL-WN579A3 wireless router firmware (up to 20210219). The DeleteMac function in /cgi-bin/wireless.cgi fails to sanitize the delete_list parameter before passing it to a system call, allowing remote attackers to execute arbitrary commands.
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<= 2021-02-19CVSS 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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Confirm device modelAccess the router's web interface or check the device label to verify the model is Wavlink WL-WN579A3Affected if The device is not a Wavlink WL-WN579A3 unit
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Check firmware versionLog into the router admin panel and navigate to the firmware or system information page to identify the installed firmware dateAffected if Firmware version is dated 2021-02-19 or earlier
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Verify wireless.cgi endpoint existsAttempt to access http://<router-ip>/cgi-bin/wireless.cgi via HTTP request to confirm the script is present and accessibleAffected if The wireless.cgi script is not found or returns an error
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Check wireless management accessibilityDetermine if the wireless management interface is enabled and reachable from the network by accessing the wireless settings pageAffected if The wireless management interface is not accessible or disabled
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Review access logs for suspicious requestsExamine router logs or network traffic logs for any unusual or encoded parameters sent to /cgi-bin/wireless.cgi, particularly involving the delete_list parameterAffected if Logs show unexpected or malicious requests to the delete_list parameter
The device is affected if it is a Wavlink WL-WN579A3 router running firmware dated on or before February 19, 2021, with the wireless.cgi interface accessible on the network.
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 dataSince the vendor did not respond and no patch exists, immediately restrict network access to the device's web interface, disable the affected wireless management functionality if possible, and replace the device with a supported alternative; if the functionality is required, attempt to implement input validation at an upstream network filter.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-2529 — 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-2026-2529 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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