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Security Announcement
Announcement > SAP10379
(Non-US) DWR-933 WPS-PIN mode vulnerability by German Stiftung Warentes
Publication ID: SAP10379
Resolved Status: Yes
Published on: 1 February 2024 10:43 GMT
Last updated on: 1 February 2024 10:43 GMT



On April 14, 2021, a 3rd party security researcher reported the D-Link (Non-US) DWR-933 hardware revision A and B with the WPS-PIN entry mode of the above-mentioned model is vulnerable, as the devices are delivered with an easily guessable standard PIN.


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  


         - Stiftung Warentest



- What can users do to safely use an affected device?
This product  WPS PIN MODE  is disabled by the factory default, please do not use it to ensure safety. If you accidentally use it, please press the PBC button “Start Via PBC” again to use it safely.
- What measures will you take?
For short-term workaround, once user choose/press PBC button then WPS PIN feature will be disable.
For Long-term solution, Rev. Ax is EOL/EOS which should be retired and replaced, and Rev. Bx should update to the firmware listed below where the feature has been removed.
Affected Models


Model Hardware Revision  Region Affected FW Fixed FW Recommendation  Last Updated
DWR-933 All A Hardware Revisions Non-US All Turn-off Feature via Web-GUI Retire and Replace - EOL/EOS 01/31/2024
DWR-933 All B Hardware Revisions Non-US v1.12 & Below FW 1.13 RevB1  Download and Update


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.