LOYTEC L-IP BACnet/IP Routers Stack-based Buffer Overflow (CVE-2026-55728)

The 'cmdipaddrconflict' subcommand of the SUID-root '/usr/bin/ltsudo' utility on a LOYTEC L-IP BACnet/IP router copies a user-supplied network interface name into a fixed 20-byte stack buffer using 'strcpy' without bounds checking. A 'superadmin'-group attacker can supply an overly long interface...