CVE-2024-57676
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 · uneditedAn access control issue in the component form2WlanBasicSetup.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the 2.4G and 5G wlan service of the device via a crafted POST request.
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 confidenceThe form2WlanBasicSetup.cgi component in D-Link 816A2 firmware v1.10CNB05_R1B011D88210 lacks proper access control checks, allowing unauthenticated attackers to send crafted POST requests that modify 2.4G and 5G WLAN service settings on the device.
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= 1.10cnb05_r1b011d88210CVSS 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
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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 device modelLog into the router web interface or check the device label to confirm the model is D-Link DIR 816Affected if The device is a D-Link DIR 816 router
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Check the firmware versionNavigate to the router's web interface System > Firmware Upgrade or Status page and locate the firmware version stringAffected if The firmware version is exactly 1.10CNB05_R1B011D88210
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Verify web management interface accessibilityAttempt to access the router's web interface from an external network or confirm whether remote management is enabled in the admin settingsAffected if The web management interface (port 80/443) is accessible from untrusted networks
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Test for unauthenticated CGI accessSend a POST request to /cgi-bin/form2WlanBasicSetup.cgi without any authentication headers or session cookies using a tool like curlAffected if The request is accepted and processed without requiring authentication (response is 200 OK rather than 401/403)
The environment is affected if you are running D-Link DIR 816 firmware version 1.10CNB05_R1B011D88210 and the router's web interface is accessible from untrusted networks, as the form2WlanBasicSetup.cgi endpoint accepts unauthenticated requests.
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 dataApply vendor firmware patch when available; until then, disable remote web management interfaces or place device behind a firewall to prevent unauthenticated external access.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-57676 — 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-2024-57676 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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