A vulnerability was found in Loytec LIP-ME20xC, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD up to 8.4.16 . It has been rated as very critical . Affected by this vulnerability is an unknown functionality of the file /etc/passwd of the component PAM Configuration . This manipulation causes improper authentication. This vulnerability is handled as CVE-2026-12504 . It is possible to launch the attack on the local host. There is not any exploit available.