CVE-2026-2528
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 identified in Wavlink WL-WN579A3 up to 20210219. Affected by this vulnerability is the function Delete_Mac_list of the file /cgi-bin/wireless.cgi. The manipulation of the argument delete_list leads to command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. 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 router's wireless.cgi web interface. The Delete_Mac_list function fails to sanitize the delete_list parameter, allowing remote attackers to inject and execute arbitrary OS commands. With CVSS 9.8 and publicly available exploits, this is trivially exploitable remotely.
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 admin interface or check the device label to verify the model is Wavlink WL-WN579A3Affected if The device is a Wavlink WL-WN579A3 router
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Check firmware versionLog into the router web interface and navigate to System or Status settings to view the firmware version. Compare against the affected version 20210210219 (2021-02-19) or earlierAffected if Firmware version is 20210210219 or any version released on or before February 19, 2021
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Verify web interface accessibilityCheck if the router web interface at port 80 or 443 is accessible from the network. Attempt to access http://router-ip/cgi-bin/wireless.cgiAffected if The web interface is reachable on the network (the vulnerability is exploitable remotely with no authentication)
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Confirm wireless management is activeCheck router status page or wireless settings to determine if the wireless management or MAC filtering feature is enabled and accessibleAffected if Wireless management features are enabled, as the vulnerable Delete_Mac_list function handles wireless MAC list operations
If the device is a Wavlink WL-WN579A3 running firmware version 20210210219 or earlier with an accessible web interface, the device is 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 dataSince the vendor did not respond to disclosure and no patch exists, immediate mitigations include: disable WAN-accessible administration interfaces, place device behind a firewall with blocked inbound access, and consider replacing the device if remote management is required. Network segmentation is critical.
- Consultation8.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-2528 — 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-2026-2528 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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