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DIR-859:: All H/W Revisions :: All Firmware Versions :: End of Support / End of Life Product :: Reported Vulnerability



The DIR-859 all hardware revisions are legacy devices and listed below in the table. All hardware revisions, have reached their End of Life ("EOL") /End of Service Life ("EOS") Life-Cycle on December 10, 2020.  D-Link US recommends D-Link devices that have reached EOL/EOS, to 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 these products cease.  Please read information and recommendations below.

3rd Party Report information

         lei wan :: wanlei _dot_ bupt _at_ gmail.com


Details : Reported 12/07/2021

        The LAN-side Web-Configuration Interface has Stack-based Buffer Overflow vulnerability in the D-Link DIR-859 Wi-Fi router firmware v1.05. In the genacgi_main function of the cgibin program, the sprintf method directly uses the service parameter from /gena.cgi. The attackers can construct a payload to carry out arbitrary code attacks.


Affected Models


Model Region Hardware Revision End of Support Legacy Website Last Updated
DIR-859 All Regions All H/W Revisions  12/10/2020 Pending


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.