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Dap 1325 FirmwareOperating system · Dlink

CVE-2023-44406

HIGH · 8.8 CVSS v3.1 Published 2024-05-03
Fix available
A fix is available. Upgrade to 1.09b03 or later.
See remediation →
93/100
Remediation priority · Urgent
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
D-Link DAP-1325 SetAPLanSettings DeviceName Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1325 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of XML data provided to the HNAP1 SOAP endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-18825.

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

Stack-based buffer overflow in D-Link DAP-1325 router's HNAP1 SOAP endpoint. The SetAPLanSettings function copies the user-supplied DeviceName parameter from XML data to a fixed-length stack buffer without validating its length, allowing remote code execution as root without authentication.

MitigationSince D-Link has likely discontinued firmware updates for this end-of-life device, restrict network exposure by disabling WAN-side management, place device behind a firewall, and replace with a supported router if possible.

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
Dap 1325 FirmwareOperating system
Affected:< 1.09b03

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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/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. Identify the device model
    Check the label on the physical device or log into the router admin interface and look for the model number in the status or system information page
    Affected if Device is not a D-Link DAP-1325
  2. Check the firmware version
    In the router admin interface, go to the Status or Management section and locate the firmware version field. Compare it to 1.09b03
    Affected if Firmware version is less than 1.09b03 (e.g., 1.08, 1.07, etc.)
  3. Verify HNAP1 SOAP endpoint is reachable
    From a network-connected host, attempt to access the HNAP1 endpoint by sending an HTTP request to http://router-ip/HNAP1 or check if port 80/443 responds to HNAP1 SOAP requests
    Affected if The HNAP1 endpoint is accessible from the network being tested
  4. Check if remote management is enabled
    In the router admin interface, look for Remote Management, WAN Access, or Web Management settings (usually under Advanced or Management sections). Verify if management access is allowed from WAN/outside interface
    Affected if Remote management from WAN is enabled or if the router is directly exposed to the internet

You are affected if you have a D-Link DAP-1325 router running firmware version below 1.09b03 and the HNAP1 SOAP endpoint is network-accessible.

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 1.09b03 or later
Fixed in 1.09b03
Interim mitigation

Since D-Link has likely discontinued firmware updates for this end-of-life device, restrict network exposure by disabling WAN-side management, place device behind a firewall, and replace with a supported router if possible.

Recommended fix Moderate confidence

D-Link DAP-1325 Firmware version 1.09b03 or later

  1. 1. Download the latest firmware version for D-Link DAP-1325 from the official D-Link support website.
  2. 2. Access the DAP-1325 router web interface using a browser on a computer connected to the router.
  3. 3. Navigate to the Administration or Settings section of the router interface.
  4. 4. Locate the Firmware Upgrade or Update option.
  5. 5. Upload the downloaded firmware file and initiate the upgrade process.
  6. 6. Wait for the firmware to upload and install - do not power off the router during this process.
  7. 7. After the router reboots, verify the firmware version has been updated to 1.09b03 or later.
  8. 8. Confirm the SetAPLanSettings functionality is working properly after the upgrade.

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

Fix this in Dap 1325 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,800
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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-2023-44406 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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