Support Announcements
DIR-3040 & DIR-3040-US :: Rev. Ax :: F/W v1.13B03 Hotfix or older : CVE-2021-21913 / TALOS-2021-1361 : Information Disclosure




On August 24, 2021, Cisco Talos security research submitted a report accusing the DIR-3040 using firmware v1.13B03 of an information disclosure vulnerability. The vulnerability was confirmed and a patch was issued too close the reported issues.  Please find the beta/hotfix release below.

3rd Party Report information


          - Report provided:

                    vulndiscovery _at_ external _dot_ cisco _dot_ com

                    Discovered by Dave McDaniel of Cisco Talos.

          - Reference :

                   3rd Party Public Disclosure :: See CVE-Id to be publically disclosed


                  TALOS-2021-1361 :: CVE-2021-21913 - WiFi Smart Mesh information disclosure



         - Compatiblity Information


                 - The patched firmware v120B03_Beta will no longer compatible with DAP-1620-EXO

                   Rev. B1 and ,DAP-1820 Rev A1 due to the fixes this patch implements.


 Affected Models


Model Hardware Revision Affected FW Fixed FW Recommendation  Last Updated
DIR-3040 All Ax Hardware Revisions v1.13B03 Hotfix or older v120B03_Beta Hotfix

1) Please Download Patch and Update Device

2) Full QA Firmware under test for automatic F/W update

notification on D-Link Wifi mobile App



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.