CVE-2026-15483
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 vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function sub_41EC14 of the file /goform/tools_nslookup of the component ssi. The manipulation of the argument nslookup_target leads to buffer overflow. It is possible to initiate the attack remotely. The vendor explains: "We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. " This vulnerability only affects products that are no longer supported by the maintainer.
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 confidenceBuffer overflow vulnerability in TRENDnet TEW-821DAP firmware version 1.12B01 in the /goform/tools_nslookup component. The nslookup_target argument is not properly validated, allowing an attacker to overflow a buffer by providing overly long input. This can be exploited remotely with network access.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 device modelAccess the device web interface or check the device label/metadata to confirm the model is TRENDnet TEW-821DAPAffected if The device is not a TRENDnet TEW-821DAP unit, then it is not affected by this specific CVE
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Check the firmware versionLog into the device web interface and navigate to the firmware/version information page, or use the command interface if available, to determine the installed firmware versionAffected if The firmware version is 1.12B01, then the device is running the affected version
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Verify the web management interface is accessibleAttempt to access the device web interface at its IP address on the default HTTP port (80) or HTTPS port (443)Affected if The web interface is exposed and the device is the affected model with firmware 1.12B01, the vulnerability is present in the /goform/tools_nslookup endpoint
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Check network exposure of the management interfaceDetermine if the device web management interface is reachable from untrusted networks by reviewing firewall rules or network scans targeting the device IP on ports 80/443Affected if The device management interface is exposed to untrusted networks and the firmware is 1.12B01, remote exploitation is possible
The environment is affected if a TRENDnet TEW-821DAP device is running firmware version 1.12B01 and its web management interface (containing the /goform/tools_nslookup endpoint) is 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 device is End-of-Life (EOL) with no vendor support, replace the device with a currently supported model. If immediate replacement is not feasible, restrict network access to the device's management interface using firewall rules or network segmentation to limit exposure.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-15483 — 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-2026-15483 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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- Version or environment caveats, and links to real fixes
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