CVE-2021-27706

Name of the Vulnerable Software and Affected Versions: Tenda G1 and G3 routers version V15.11.0.17(9502) CN

Description: The issue allows remote attackers to execute arbitrary code via a crafted action/"IPMacBindIndex" request. This occurs because the formIPMacBindDel function directly passes the parameter IPMacBindIndex to strcpy without limit.

Recommendations: For Tenda G1 and G3 routers version V15.11.0.17(9502) CN, as a temporary workaround, consider disabling the formIPMacBindDel function until a patch is available. Restrict access to the IPMacBindIndex parameter in the affected API endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.