CVE-2021-27691

Name of the Vulnerable Software and Affected Versions: Tenda G0 routers versions v15.11.0.5(5876) CN through v15.11.0.6(9039) CN Tenda G1 and G3 routers versions v15.11.0.16(9024) CN through v15.11.0.17(9502) CN

Description: The issue allows remote attackers to execute arbitrary OS commands via a crafted "action/setDebugCfg" request. This occurs because the formSetDebugCfg function executes glibc's system function with untrusted input.

Recommendations: For Tenda G0 routers versions v15.11.0.5(5876) CN through v15.11.0.6(9039) CN, consider disabling the formSetDebugCfg function until a patch is available. For Tenda G1 and G3 routers versions v15.11.0.16(9024) CN through v15.11.0.17(9502) CN, restrict access to the "action/setDebugCfg" request to minimize the risk of exploitation.