CVE-2021-27249: D-Link Dap-2020 Firmware

High severity, CVSS 8.8. EPSS: 5.1% 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-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11369.

Affected products

• D-Link Dap-2020 Firmware: version 1.01 only

Published 2021-04-14. Last modified 2026-06-17.