Support Announcements
(Non-US) DSL-2750U :: Rev V1 :: F/W vIN_1.09 :: Multiple Vulnerabilities



On November 18, 2021, a 3rd party security researcher reported the D-Link (Non-US) DSL-2750U hardware revision. V1, Firmware vIN_1.09 and identified potential vulnerabilities.


As soon as D-Link was made aware of the reported security issues, we had promptly started our investigation and  no providing a security patch , which is available to download below.


 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.


Below you will find a patch for the model's that close the reported vulnerabilities.


3rd Party Report information

    Reports provided: 


       COE-CNDS Labs, VJTI , India

             - Parul Jajal : pjjajal _at_ ee _dot_ _dot_ in

             - Anurag M. Chevendra,

             - Dr. Faruk Kazi


     Public Disclosed 3rd Party Report ::


         - To be released at later time



       1. Clear text password :: Changed to Base64 for obfusification
       2. Denial of service
       3. Denial of Service
       4. Denial of Service
       5. Cross-Site Scripting
       6. Denial of Service
       7. Denial of Service
       8. Cross-Site Scripting
       9. Cross-Site Scripting
       10. Buffer Overflow
       11. Buffer Overflow
       12. Buffer Overflow
       13. Buffer Overflow


Affected Models


Model Hardware Revision  Region Affected FW Fixed FW Recommendation  Last Updated
DSL-2750U All Vx Hardware Revisions Worldwide (Non-US) vIN_1.09& Below vIN_1.09_security_patch Download Hotfix and manually update router 01/25/2022


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.