CVE-2025-50661
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 multiple parameters in the /url_rule.asp endpoint. An attacker can exploit this vulnerability by sending a crafted HTTP GET request with parameters name, en, ips, u, time, act, rpri, and log.
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 confidenceA buffer overflow vulnerability in D-Link DI-8003 router firmware version 16.07.26A1 allows remote code execution via crafted HTTP GET requests to the /url_rule.asp endpoint. The vulnerability stems from improper bounds checking when processing eight parameters (name, en, ips, u, time, act, rpri, log), enabling an attacker to overwrite 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.
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 D-Link DI-8003 modelAccess the router web interface or check the device label/metadata for model number DI-8003Affected if Device is not a D-Link DI-8003 router
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Identify firmware versionLog into the router web UI and navigate to Status or System Info page to view the firmware version, or use SNMP/CLI if availableAffected if Firmware version is 16.07.26A1 exactly
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Verify /url_rule.asp endpoint existsAttempt to access http://[router-ip]/url_rule.asp via HTTP GET request - the page should return a response (even if authentication is required)Affected if The endpoint responds, indicating the vulnerable web component is present
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Check if web management is remotely accessibleFrom an external network, attempt to reach the router's HTTP/HTTPS ports (typically 80/443) from outside the LAN, or check the router's 'Remote Management' or 'Web Access' setting in the administration interfaceAffected if Remote web management (WAN access) is enabled and the device is directly reachable from the internet
You are affected if you have a D-Link DI-8003 router running firmware 16.07.26A1 with the /url_rule.asp endpoint present and web management accessible from untrusted networks.
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 this is an older EOL device with no vendor patch available, recommended mitigations include placing the device behind a restrictive firewall, disabling WAN access to the management interface, or replacing the device with a currently supported model.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-50661 — 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-2025-50661 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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