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Announcement > SAP10375
DIR-3040 :: H/W Ax :: F/W v1.20B03 :: LAN-Side Buffer Overflow in MiniDLNA Daemon Vulnerability
Publication ID: SAP10375
Resolved Status: Yes
Published on: 31 January 2024 11:58 GMT
Last updated on: 31 January 2024 11:58 GMT



Starting on December 26, 2022, 3rd party security research from TrendMicro ZDI reported a buffer overflow remote code execution vulnerability for the DIR-3040 hardware rev. Ax, firmware  v1.20B03 and below as having multiple security vulnerabilities


As soon as D-Link was made aware of the reported security issues, we had promptly started our investigation and began developing security patches.


D-Link takes the issues of network security and user privacy very seriously. We have a dedicated task force and product management team on call to address evolving security issues and implement appropriate security measures.


Report information  


         - Reported by TrendMicro ZDI


              ZDI-CAN-19910: D-Link DIR-3040 MiniDLNA Heap-based Buffer Overflow Remote Code Execution Vulnerability      


           The beta-hotfix is currently undergoing full QA tests and will be placed on the automatic download server once validated and tests are complete.         


NOTICE: This model is moving to End of Support life on 03/31/2024, the resources associated with these products will ceased development and are no longer supported as of this date. D-Link Systems, Inc. recommends retiring these products and replacing them with products that receive firmware updates.


Affected Models


Model Hardware Revision  Region Affected FW Fixed FW Recommendation  Last Updated
DIR-3040 All A Series Hardware Revisions US v120B03 & Below v120B03beta Hotfix
Upgrade to Hofix Patch

** Fully Qualified firmware is available on automatic updates or triggered through the device management.


Regarding Security patch for your D-Link Devices
Firmware updates address the security vulnerabilities in affected D-Link devices. D-Link will update this continually and we strongly recommend all users to install the relevant updates.
Please note that this is a device beta software, beta firmware, or hot-fix release which is still undergoing final testing before its official release. The beta software, beta firmware, or hot-fix is provided on an “as is” and “as available” basis and the user assumes all risk and liability for use thereof. D-Link does not provide any warranties, whether express or implied, as to the suitability or usability of the beta firmware. D-Link will not be liable for any loss, whether such loss is direct, indirect, special or consequential, suffered by any party as a result of their use of the beta firmware.
As there are different hardware revisions on our products, please check this on your device before downloading the correct corresponding firmware update. The hardware revision information can usually be found on the product label on the underside of the product next to the serial number. Alternatively, they can also be found on the device web configuration.