CVE-2014-9727
HighSummary
AVM Fritz!Box allows remote attackers to execute arbitrary commands via shell metacharacters in the var:lang parameter to cgi-bin/webcm.
Risk Assessment
Attackers can remotely take control of the device, leading to serious security threats to the network.
Recommendation
It is recommended to update the device firmware to the latest version and restrict access to the administrative interface.
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Original NVD description (English source)
AVM Fritz!Box allows remote attackers to execute arbitrary commands via shell metacharacters in the var:lang parameter to cgi-bin/webcm.