CVE-2021-40408: Reolink RLC-410W Firmware

Critical severity, CVSS 9.8. EPSS: 3.7% chance of exploitation in the next 30 days.

An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->username variable, that has the value of the userName parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection.

Affected products

• Reolink RLC-410W Firmware: version 3.0.0.136_20121102 only

Published 2022-01-28. Last modified 2026-06-17.