CVE-2024-57681
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 form2alg.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the agl 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 confidenceThis is a broken access control vulnerability (CWE-284) in the web interface of D-Link 816A2 router firmware v1.10CNB05_R1B011D88210. The form2alg.cgi component fails to properly enforce authentication, allowing unauthenticated attackers to modify the agl service configuration via a crafted POST request.
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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 modelCheck if the target device is a D-Link DIR-816 router by reviewing the device label, web interface login page, or SNMP/sysinfo outputAffected if The device is not a D-Link DIR-816 router
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Determine the firmware versionAccess the router web interface and navigate to the Status or System Info page to view the firmware version, or check via telnet/SSH if available using 'cat /proc/version' or similar commandAffected if The firmware version is not exactly 1.10CNB05_R1B011D88210
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Verify the web management interface is enabledCheck the router settings under Administration or Management > Remote Management to see if the HTTP/HTTPS web interface is enabled and accessible from the networkAffected if The web interface is disabled or not accessible
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Confirm form2alg.cgi exists and is accessibleAttempt to access the form2alg.cgi file via HTTP/HTTPS POST request to the router's web interface (e.g., http://<router-ip>/form2alg.cgi)Affected if The form2alg.cgi script does not exist or returns a 404 error
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Verify the agl service configuration capabilitySend a crafted POST request to form2alg.cgi targeting the agl service configuration parameters and observe if the request is processed without requiring authenticationAffected if The router accepts and processes unauthenticated POST requests to form2alg.cgi for agl service configuration
You are affected if you have a D-Link DIR-816 router running firmware version 1.10CNB05_R1B011D88210 with its web interface accessible and the form2alg.cgi endpoint responds to 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 available firmware patches from D-Link; if no patch exists, disable remote web management or restrict access to trusted IPs using firewall rules.
- Consultation3.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,880.
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Free · runs locallyCheck whether your project pulls in CVE-2024-57681 — 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-2024-57681 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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