CVE-2023-5154
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 · unedited** UNSUPPORTED WHEN ASSIGNED ** A vulnerability has been found in D-Link DAR-8000 up to 20151231 and classified as critical. This vulnerability affects unknown code of the file /sysmanage/changelogo.php. The manipulation of the argument file_upload leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-240250 is the identifier assigned to this vulnerability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.
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 confidenceD-Link DAR-8000 devices contain an unrestricted file upload vulnerability in /sysmanage/changelogo.php. The file_upload parameter lacks proper validation, allowing remote attackers to upload arbitrary PHP files and achieve remote code execution. A public exploit exists for this vulnerability.
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<= 2015-12-31CVSS 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 D-Link DAR-8000 deviceAccess the device admin interface or check the device label/model number to confirm it is a D-Link DAR-8000 series device.Affected if The device model is confirmed as D-Link DAR-8000.
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Check firmware versionLog into the device admin panel and navigate to System Status or Help > About. Alternatively, check the web interface URL or firmware file metadata. Compare the firmware version or build date against the affected range: <= 2015-12-31.Affected if The installed firmware version is from 2015 or earlier, or the build date is on or before December 31, 2015.
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Verify vulnerable endpoint existsAttempt to access the file /sysmanage/changelogo.php on the device (e.g., https://<device-ip>/sysmanage/changelogo.php). Check if the page loads or returns any response.Affected if The URL /sysmanage/changelogo.php is accessible and responds to requests.
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Confirm file upload functionality is accessibleSend a POST request to /sysmanage/changelogo.php with a file upload parameter named 'file_upload' (e.g., using curl or a browser dev tools). Check if the endpoint accepts the upload without authentication errors.Affected if The endpoint accepts file uploads without requiring valid authentication credentials.
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Assess network exposureCheck if the device management interface (HTTP/HTTPS ports 80/443) is reachable from external networks or the internet. Review firewall rules and NAT configurations.Affected if The D-Link DAR-8000 device or its web interface is directly accessible from the internet or untrusted networks.
You are affected if you have a D-Link DAR-8000 device running firmware dated 2015-12-31 or earlier, the /sysmanage/changelogo.php endpoint is accessible, and the device is exposed to network access.
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.
dbcve · scopedSince the product is end-of-life and receives no patches, retire and replace the device immediately. If replacement is not immediately possible, block internet access to the affected endpoint via firewall or WAF rules and remove the device from any external-facing networks.
- The D-Link DAR-8000 device is end-of-life (EOL) and no longer supported by the vendor.
- There is no patched or fixed firmware version available for this vulnerability.
- The vendor explicitly recommends retiring and replacing this product.
- If the device must remain in service, consider network isolation and implement strict firewall rules to limit remote access to the management interface.
- Monitor for any Indicators of Compromise (IoCs) related to unauthorized file uploads.
- Plan for immediate replacement with a supported, actively maintained security appliance.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-5154 — 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-2023-5154 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
- No spam, self-promotion, credentials, or personal data