CVE-2026-10206
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 detected in D-Link DI-8400 up to 16.07.26A1. This affects an unknown function of the file /dbsrv.asp. Performing a manipulation of the argument str results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. The initial researcher advisory mentions contradicting parameter names to be affected.
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 confidenceStack-based buffer overflow vulnerability in D-Link DI-8400 router (versions up to 16.07.26A1) in the /dbsrv.asp file. The 'str' parameter is not properly validated before being used in a stack-allocated buffer, allowing remote attackers to overwrite stack memory and potentially execute arbitrary code.
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 device modelAccess the router admin interface and check the device information page, or check the physical device label for the model number DI-8400Affected if Device is not a D-Link DI-8400 router - this vulnerability only affects that specific model
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Check firmware versionIn the router admin panel, navigate to System > Firmware Upgrade or Status page to view the current firmware version. Compare against 16.07.26A1 - any version at or below this is affected.Affected if Firmware version is 16.07.26A1 or earlier (including all prior releases)
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Verify /dbsrv.asp endpoint existsAttempt to access http://[router-ip]/dbsrv.asp via curl or browser. A 200 OK response with content indicates the vulnerable file is present.Affected if The /dbsrv.asp file is accessible and returns a valid HTTP response
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Check if remote web management is enabledIn router settings, examine Network > Remote Management or Access Control settings. Verify if the web interface is accessible from WAN (remote) IP addresses rather than LAN only.Affected if Remote management from WAN is enabled - this allows the vulnerability to be exploited remotely over the internet
The device is affected if it is a D-Link DI-8400 running firmware version 16.07.26A1 or earlier, with the /dbsrv.asp endpoint accessible and remote management enabled.
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 if available; otherwise restrict administrative interface access to trusted networks only or replace end-of-life device. CVSS 8.8 indicates high exploitability requiring immediate action.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-10206 — 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-2026-10206 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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