CVE-2026-12503: Loytec L-Dali

Critical severity, CVSS 9.2. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Link Resolution (CWE-59) in `/usr/bin/larm_starter` in Loytec L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an authenticated `larmapp` attacker to make `/etc/passwd` writable by the `larmapp` group (leading to root privilege escalation) via a symlink attack on `/etc/lighttpd/ssl/server.pem`.

Affected products

• Loytec L-Dali: up to and including 8.4.16
• Loytec L-Gate: up to and including 8.4.16
• Loytec L-Inx: up to and including 8.4.16
• Loytec L-Iob: up to and including 8.4.16
• Loytec L-Pad: up to and including 8.4.16
• Loytec L-Roc: up to and including 8.4.16
• Loytec L-Vis: up to and including 8.4.16
• Loytec Lip-ME20XC: up to and including 8.4.16

Published 2026-07-24. Last modified 2026-07-27.