CVE-2025-50668
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 buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the s parameter in the /web_list_opt.asp endpoint.
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 confidenceA buffer overflow vulnerability exists in D-Link DI-8003 router firmware version 16.07.26A1. The vulnerability is in the /web_list_opt.asp endpoint where the s parameter fails to properly validate input length before copying data into a fixed-size buffer. This improper bounds checking allows an attacker to overflow the buffer, potentially leading to remote code execution or denial of service.
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= 16.07.26a1CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 model is D-Link DI-8003Access the router admin panel or check the device label/marketing to verify the exact model number is DI-8003Affected if Device is not a D-Link DI-8003 model, then not affected by this specific CVE
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Identify installed firmware versionLog into the router web interface and navigate to System Status or Firmware Upgrade page to view the current firmware version, or check via CLI if availableAffected if Firmware version is 16.07.26A1 exactly; other versions are not affected by this specific CVE
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Determine if web management interface is accessibleAttempt to access the router web interface from the network segment in question (WAN or LAN). Try reaching http://<router-ip>/web_list_opt.asp directlyAffected if The /web_list_opt.asp endpoint is reachable and the 's' parameter can be manipulated; vulnerability requires the web management feature to be enabled and accessible
You are affected only if you have an exact D-Link DI-8003 router running firmware version 16.07.26A1 AND the web management interface (specifically /web_list_opt.asp) is network-accessible.
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 updates when available. Until then, restrict network access to the affected /web_list_opt.asp endpoint and implement input validation at an upstream device (WAF or firewall) to block abnormally long s parameter values.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-50668 — 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-2025-50668 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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