A vulnerability classified as critical was found in UTT 进取 520W 1.7.7-180627. Affected is the function strcpy of the file /goform/APSecurity. Executing a manipulation of the argument wepkey1 can lead to buffer overflow.

This vulnerability appears as CVE-2026-0839. The attack may be performed from remote. In addition, an exploit is available.

The vendor was contacted early about this disclosure but did not respond in any way.