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Dap 1325 FirmwareOperating system · Dlink

CVE-2023-41187

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 HNAP Missing Authentication 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 implementation of the HNAP interface. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-18807.

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

The D-Link DAP-1325 router contains a vulnerability in its HNAP (Home Network Administration Protocol) interface that lacks authentication checks before allowing access to sensitive functionality. Network-adjacent attackers can exploit this flaw to execute arbitrary code with root privileges without providing any credentials.

MitigationUntil an official firmware patch is released by D-Link, restrict network access to the device's management interface by disabling WAN management, implementing network segmentation, or placing the device in a isolated VLAN.

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 device model
    Access the router web interface or check the device label to confirm the model is D-Link DAP-1325
    Affected if Device is not a D-Link DAP-1325 (different models have different vulnerabilities)
  2. Check firmware version
    Log into the router web interface and navigate to the Status or System Information page to view the firmware version, or use the command 'cat /proc/version' via telnet/SSH if enabled
    Affected if Firmware version is lower than 1.09b03 (any version below this is affected)
  3. Verify HNAP interface accessibility
    From a network-adjacent host, attempt to access the HNAP interface by browsing to http://<device_ip>/HNAP1/ or sending an HTTP POST request to this endpoint without providing credentials
    Affected if The HNAP interface responds to unauthenticated requests (vulnerable condition)
  4. Check WAN management settings
    In the router web interface, go to Management > Access Control or similar section and verify if WAN-side management or remote administration is enabled
    Affected if WAN management or remote administration is enabled, allowing network-adjacent attackers to reach the HNAP interface from outside the local network

A D-Link DAP-1325 device running firmware below version 1.09b03 with an accessible HNAP interface (especially if WAN management is enabled) 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

Until an official firmware patch is released by D-Link, restrict network access to the device's management interface by disabling WAN management, implementing network segmentation, or placing the device in a isolated VLAN.

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 web management interface.
  2. 2. Navigate to the administration or system settings section to locate the firmware upgrade option.
  3. 3. Download the firmware version 1.09b03 or later from the official D-Link support website (support.dlink.com).
  4. 4. Upload the firmware file through the web interface or use the D-Link Wi-Fi Assistant app if applicable.
  5. 5. Wait for the upgrade process to complete - do not power off the device during the update.
  6. 6. After reboot, verify the new firmware version is installed and test that the HNAP interface now requires authentication.
Caveat Firmware upgrades on routers typically require a brief downtime; ensure no critical network operations are in progress during the update

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

Fix this in Dap 1325 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,440
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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-2023-41187 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