CVE-2021-27692

Name of the Vulnerable Software and Affected Versions: Tenda G1 and G3 routers versions v15.11.0.17(9502) CN through v15.11.0.17(9502) CN Tenda G1 and G3 routers version v15.11.0.16(9024) CN

Description: The issue allows remote attackers to execute arbitrary OS commands via a crafted "action/umountUSBPartition" request. This occurs because the formSetUSBPartitionUmount function executes the doSystemCmd function with untrusted input.

Recommendations: For Tenda G1 and G3 routers version v15.11.0.17(9502) CN, consider disabling the formSetUSBPartitionUmount function until a patch is available. For Tenda G1 and G3 routers version v15.11.0.16(9024) CN, consider disabling the formSetUSBPartitionUmount function until a patch is available. Avoid using the "action/umountUSBPartition" request in the affected API endpoint until the issue is resolved.