Support Announcements
DAP-3662 :: v2.01r098 :: ZDI-CAN-11206 :: Authentication Bypass (RCE) Remote Command Execution


On August 19, 2020, a 3rd party security researcher team, Trend Micro's Zero Day Initiative, submitted a report accusing the DAP-3662 Hardware Revision A using firmware v2.01r098 of  a Authentication Bypass exploit that may lead to Remote Code Execution(RCE) vulnerability.  This vulnerability was assigned ZDI-CAN-11206 from Trend Micro.  The Vulnerability was confirmed and a patch was issued too close the issue.  Please find the beta/hotfix release below

3rd Party Report information


          - Report providedchung96vn of Vietnam's NCSC working with Trend Micro's Zero Day Initiative (ZDI) :: zdi-disclosures _at_ trendmicro _dot_ com

          - Reference : (Language directly from ZDI Report)


                   - ZDI-CAN-11206: D-Link DAP-3662 httpd Authentication Bypass Remote Code Execution Vulnerability

- The device using firmware v2.01r098 or below (olders)  uses the mathopd http server to serve cgi pages. Due to a misconfiguration for the web server, an attacker may call arbitrary cgi scripts without authentication. The PoC leverages a post-authentication RCE feature to execute code as the access point.


 Affected Models


Model Hardware Revision Affected FW Fixed FW Recommendation  Last Updated
DAP-3662 All Ax Hardware Revisions v2.01r098 & Below  Under Development Estimated Release End Feb. 2021 02/12/2021


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.