A vulnerability identified as critical has been detected in Tenda JD12L 16.03.53.23 . The affected element is the function fromSetWifiGusetBasic of the file /goform/WifiGuestSet . Performing a manipulation of the argument shareSpeed results in stack-based buffer overflow. This vulnerability was named CVE-2026-13516 . The attack may be initiated remotely. In addition, an exploit is available.