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Dap 1325 FirmwareOperating system · Dlink

CVE-2023-41211

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 SetHostIPv6StaticSettings StaticPrefixLength 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-18837.

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 the SetHostIPv6StaticSettings function of D-Link DAP-1325 routers. The HNAP1 SOAP endpoint processes XML data without validating input length before copying to a fixed-size stack buffer, allowing unauthenticated network-adjacent attackers to achieve root-level code execution.

MitigationApply vendor-supplied firmware patch when available; until then, restrict network access to the device's management interface to prevent unauthenticated exploitation.

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 or check the device label to verify the exact model number
    Affected if Device is not a D-Link DAP-1325
  2. Identify installed firmware version
    Log into the router web interface and navigate to the Status or Management section to view the firmware version; alternatively, check the admin page or device info endpoint
    Affected if Firmware version is less than 1.09b03 (e.g., 1.08, 1.07, etc.)
  3. Verify HNAP1 SOAP endpoint is reachable
    Attempt to access the HNAP1 endpoint on the device (typically at /HNAP1 or similar SOAP endpoint on port 80/443) using a web browser or curl request from a network-adjacent host
    Affected if The HNAP1 endpoint responds without authentication and accepts SOAP XML requests
  4. Check if IPv6 static settings feature is exposed
    Review the router web interface for IPv6 or network settings pages; determine if the SetHostIPv6StaticSettings function is exposed through the HNAP1 API
    Affected if IPv6 static settings configuration is available and accessible via the HNAP1 SOAP interface without authentication

The device is affected if it is a D-Link DAP-1325 running firmware version prior to 1.09b03 and the HNAP1 SOAP endpoint with IPv6 static settings functionality is accessible without authentication.

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

Apply vendor-supplied firmware patch when available; until then, restrict network access to the device's management interface to prevent unauthenticated exploitation.

Recommended fix Moderate confidence

D-Link DAP-1325 firmware 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 D-Link support announcement page at supportannouncement.us.dlink.com to obtain the official firmware version 1.09b03 or later
  3. 3. Download the firmware update file from the official D-Link support site
  4. 4. Access the router's web management interface and locate the firmware upgrade section (typically under Administration > Firmware Upgrade)
  5. 5. Upload and apply the firmware version 1.09b03 or later
  6. 6. After the device reboots, verify the firmware version has been updated successfully
  7. 7. Confirm that the SetHostIPv6StaticSettings functionality is working correctly
Caveat Firmware upgrades may reset device configuration to defaults; back up configuration before upgrading

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

Fix this in Dap 1325 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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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-2023-41211 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