CVE-2026-41923
CriticalSummary
The WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary, allowing unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter.
Risk Assessment
Attackers can exploit this vulnerability to remotely execute commands, potentially leading to device takeover and access to the local network.
Recommendation
It is recommended to update the device firmware to the latest version to mitigate this vulnerability and implement additional security measures such as input filtering.
Original NVD description (English source)
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter. Attackers can exploit unsanitized parameter concatenation in the set_add_routing function to inject shell commands that are executed via popen() with partial output reflected in the HTTP response.