CVE-2021-34829: D-Link Dap-1330 Firmware

High severity, CVSS 8.8. EPSS: 2.3% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1330 1.13B01 BETA routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the HNAP_AUTH HTTP header. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-12065.

Affected products

• D-Link Dap-1330 Firmware: version 1.13b01 only

Published 2021-07-15. Last modified 2026-06-17.