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Dar 7000 FirmwareOperating system · Dlink

CVE-2023-5143

CRITICAL · 9.8 CVSS v3.1 Published 2023-09-24
Fix available
A fix is available. Upgrade to after 20151231 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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, which was classified as critical, has been found in D-Link DAR-7000 up to 20151231. This issue affects some unknown processing of the file /log/webmailattach.php. The manipulation of the argument table_name leads to an unknown weakness. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-240239. 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 confidence

SQL injection vulnerability in D-Link DAR-7000 device management software. The /log/webmailattach.php script does not properly sanitize the table_name parameter, allowing remote attackers to inject arbitrary SQL commands. The vulnerability has a CVSS score of 9.8 (Critical) and a public exploit is available.

MitigationThis product is end-of-life and no longer supported by the vendor. The vendor recommends retiring and replacing the device rather than applying patches. Immediate network isolation or WAF rules should be deployed as temporary mitigations while planning replacement.

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
Dar 7000 FirmwareOperating system
Affected:<= 20151231

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm the device model
    Identify if the target device is a D-Link DAR-7000. Check the device physical label, admin interface, or network scan results for the model identifier.
    Affected if The device is confirmed to be a D-Link DAR-7000 unit
  2. Check the firmware version
    Log into the device management interface and navigate to the system or firmware information page to find the firmware build date. Compare this against the affected version range.
    Affected if The firmware build date is 20151231 or earlier (this is the last vulnerable version)
  3. Locate the vulnerable script
    Attempt to access the /log/webmailattach.php file via HTTP from the device. Use a browser or curl command: curl http://TARGET_IP/log/webmailattach.php
    Affected if The web server responds to requests for /log/webmailattach.php (a 404 does not necessarily mean unaffected if the path differs)

The device is affected if it is a D-Link DAR-7000 running firmware version 20151231 or earlier AND the /log/webmailattach.php endpoint is accessible on the network.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to a release after 20151231
Interim mitigation

This product is end-of-life and no longer supported by the vendor. The vendor recommends retiring and replacing the device rather than applying patches. Immediate network isolation or WAF rules should be deployed as temporary mitigations while planning replacement.

Recommended fix High confidence
  1. This vulnerability affects D-Link DAR-7000 firmware version 20151231 and earlier.
  2. D-Link has confirmed this product is end-of-life (EOL) and no longer supported by the maintainer.
  3. The vendor explicitly recommends retiring and replacing this product rather than applying patches.
  4. If continued use is unavoidable, isolate the device on a restricted network segment to minimize attack surface.
  5. Implement network-level access controls (firewall rules, ACLs) to limit connectivity to the affected system from untrusted sources.
  6. Monitor for indicators of compromise given the public exploit availability.
Caveat No upgrade or patch available - product is end-of-life and vendor recommends replacement

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Dar 7000 Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation24.0 h
  • Testing12.0 h
  • Review / QA4.0 h
48.0 hours of engineering $8,440
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-5143 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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