Actively exploited in the wild
Reolink RLC-410W IP Camera OS Command Injection Vulnerability
Reolink - RLC-410W IP Camera · Listed in the CISA KEV since 2024-12-18. This indicates confirmed attacks in production environments.
Required action: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.
CVE-2021-40407
HighCVSS 7.2KEVSummary
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->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.
Risk Assessment
Risk of remote arbitrary command execution on the device, potentially leading to full device and network compromise.
Recommendation
Update the device firmware to a patched version and restrict access to the API.
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Original NVD description (English source)
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->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.