Support Announcements
(Non-US) DSL-320B :: H/W Rev Dx :: FW EU_1.25 & Lower :: End of Support / End of Life Product :: CVE-2021-26709 Reporting Multiple Vulnerabilities



The DSL-320B, all D series hardware revisions have reached End of Life ("EOL") /End of Service Life ("EOS") of there Life-Cycles on January 27. 2016.  D-Link US recommends D-Link devices that have reached EOL/EOS, should be retired and replaced. Please contact your regional office for recommendations (LINK).

As a  general policy, when products reach EOS/EOL, they can no longer be supported, and all firmware development for the products ceases.  Please read information and recommendations below.


3rd Party Report information

          - Reports provided: 
Gabriele Gristina :: gabriele _dot_ gristina _at_ gmail _dot_ com

- Vulnerability  : 01/22/2021 : 
CVE-2021-26709 :: The ADSL modem DSL-320B-D1, version EU_1.25 and lower, is prone to multiple Stack Buffer Overflow that allow unauthenticated remote attackers to takeover the device. The vulnerabilities was found in the login functionality, exposed by "login.xgi" in "user" and "pass" parameters.



                - Public Disclosure Link :  To be updated with author's public disclousre link


Status of D-Link Models


Model Region Hardware Revision End of Support Legacy Website Last Updated
DSL-320B U.S. Dx Series H/W Revisions
01/27/2016 No, Non-US Revison 03/30/2021


Recommendation for End of Support /End of Life Products

From time to time, D-Link will decide that some of its products have reached End of Support ("EOS") / End of Life (“EOL”). D-Link may choose to EOS/EOL a product due to evolution of technology, market demands,  new innovations, product efficiencies based on new technologies, or the product matures over time and should be replaced by functionally superior technology.


For US Consumer


If a product has reached End of Support ("EOS") / End of Life ("EOL"), there is normally no further extended support or development for it.

Typically for these products, D-Link will be unable to resolve device or firmware issues since all development and customer support has ceased. 


D-Link strongly recommends that this product be retired and cautions that any further use of this product may be a risk to devices connected to it. If US consumers continue to use these devices against D-Link's recommendation, please make sure the device has the most recent firmware, make sure you frequently update the device's unique password to access its web-configuration, and always have WIFI encryption enabled with a unique password.