CVE-2025-50645
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 has been discovered in D-Link DI-8003 16.07.26A1, which can lead to a buffer overflow when the s parameter in the pppoe_list_opt.asp endpoint is manipulated. By sending a crafted request with an excessively large value for the s parameter, an attacker can trigger a buffer overflow condition.
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 routers running firmware 16.07.26A1. The vulnerability is located in the pppoe_list_opt.asp endpoint where the s parameter fails to properly validate input length. By sending a crafted HTTP request with an excessively large value for the s parameter, an attacker can trigger a buffer overflow, potentially leading to arbitrary 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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Identify the device modelAccess the router's web interface or check the device label/marketing to confirm the model is D-Link DI-8003Affected if The device is not a D-Link DI-8003 router, then it is not affected
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Check the installed firmware versionLog into the router web interface and navigate to the Status or System Information page to view the firmware version, or use the command 'cat /proc/version' or 'nvram get firm_version' via telnet/SSH if availableAffected if The firmware version is not exactly 16.07.26A1, then it is not in the affected version range
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Verify the pppoe_list_opt.asp endpoint existsAttempt to access the URL 'http://<device_ip>/pppoe_list_opt.asp' in a web browser or via curl to confirm the page exists on the deviceAffected if The page returns a 404 or is not found, then the vulnerable endpoint is not present
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Confirm remote web management is enabledIn the router web interface, check the Administration or Management settings to see if remote HTTP/HTTPS management access is enabled (look for 'Remote Management' or 'Web Management' settings)Affected if Remote web management is disabled and the device is not accessible from untrusted networks, then the vulnerability is not remotely exploitable in the current configuration
The device is affected only if it is a D-Link DI-8003 router running firmware version 16.07.26A1, the pppoe_list_opt.asp endpoint exists, and remote web management is enabled allowing HTTP access to the vulnerable page.
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; if no patch exists, consider network segmentation or replacement of the affected device, as legacy D-Link routers often lack security support.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-50645 — 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-2025-50645 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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