CVE-2025-5839

Name of the Vulnerable Software and Affected Versions Tenda AC9 version 15.03.02.13

Description A critical vulnerability has been found in the function fromadvsetlanip of the file /goform/AdvSetLanip of the component POST Request Handler. The manipulation of the argument lanMask leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Recommendations For Tenda AC9 version 15.03.02.13, as a temporary workaround, consider disabling the fromadvsetlanip function until a patch is available. Restrict access to the /goform/AdvSetLanip endpoint to minimize the risk of exploitation. Avoid using the lanMask argument in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.