CVE-2021-26810: D-Link Dir-816 Firmware

Critical severity, CVSS 9.8. EPSS: 4.9% chance of exploitation in the next 30 days.

D-link DIR-816 A2 v1.10 is affected by a remote code injection vulnerability. An HTTP request parameter can be used in command string construction in the handler function of the /goform/dir_setWanWifi, which can lead to command injection via shell metacharacters in the statuscheckpppoeuser parameter.

Affected products

• D-Link Dir-816 Firmware: version 1.10b05 only

Published 2021-03-30. Last modified 2026-06-17.