A vulnerability classified as very critical 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 . This issue affects some unknown processing of the file /etc/lighttpd/ssl/server.pem . The manipulation results in link following. This vulnerability is cataloged as CVE-2026-12503 . The attack may be launched remotely. There is no exploit available.