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Dap 1325 FirmwareOperating system · Dlink

CVE-2023-44407

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 Gateway 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-18826.

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 routers in the HNAP1 SOAP endpoint's XML data handling. The vulnerability stems from insufficient validation of user-supplied data length before copying to a fixed-length stack buffer, enabling remote code execution as root without authentication.

MitigationSince no authentication is required and the device likely has vendor support ended, immediately restrict network access to the device or replace it if no firmware update is available; implement network segmentation as a compensating control.

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. Confirm device model is D-Link DAP-1325
    Access the router web interface (typically at 192.168.0.1) and check the device model in the status or management page, or run 'cat /proc/cpuinfo' via SSH/Telnet if available
    Affected if Device is not a D-Link DAP-1325 model
  2. Check firmware version
    In the router web interface, navigate to Status or Management section to view the firmware version; alternatively, via command line run 'cat /etc/fw_info' or check the web interface source for version strings
    Affected if Firmware version is less than 1.09b03 (e.g., 1.08, 1.07, etc.)
  3. Verify HNAP1 SOAP endpoint accessibility
    Attempt to access the HNAP1 endpoint via HTTP request to the router (typically at /HNAP1/ or /HNAP1/Login.aspx) using a tool like curl: curl -X POST http://<router-ip>/HNAP1/
    Affected if HNAP1 endpoint responds (indicates SOAP service is running)
  4. Confirm XML handling is enabled
    Send a basic HNAP1 SOAP request with XML payload to the endpoint and observe if it processes the request. The vulnerability is triggered when XML data is processed without proper length validation
    Affected if The device accepts and processes HNAP1 SOAP requests (no authentication required per CVE details)

If the device is a D-Link DAP-1325 running firmware version below 1.09b03 and the HNAP1 SOAP endpoint is accessible, the environment is affected by this vulnerability.

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 no authentication is required and the device likely has vendor support ended, immediately restrict network access to the device or replace it if no firmware update is available; implement network segmentation as a compensating control.

Recommended fix Moderate confidence

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

  1. 1. Identify the current firmware version of the D-Link DAP-1325 device by accessing the router's web interface or checking the device label
  2. 2. Navigate to the D-Link support page for the DAP-1325 at support.dlink.com or via the product page at https://www.dlink.com/en/security-bulletin
  3. 3. Locate and download firmware version 1.09b03 or later from the official D-Link support site
  4. 4. Access the DAP-1325 administration web interface (typically at 192.168.0.1 or 192.168.1.1)
  5. 5. Navigate to the Management > System > Firmware Upgrade section
  6. 6. Upload the downloaded firmware file and allow the device to complete the update process
  7. 7. After reboot, verify the firmware version has been updated to 1.09b03 or later
Caveat Firmware updates may reset device configuration to defaults; back up settings before upgrading if possible

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
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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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-2023-44407 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