CISA: Synectix LAN 232 TRIO Unauthenticated Web Interface
🔒 The Synectix LAN 232 TRIO 3‑port serial-to-Ethernet adapter exposes its web management interface without requiring authentication, enabling unauthenticated actors to modify critical device settings or perform a factory reset. Tracked as CVE-2026-1633 and rated CVSS v3.1 10.0 (Critical), the product is end-of-life and Synectix is no longer in business, so firmware fixes are unavailable. CISA recommends minimizing network exposure, isolating control networks behind firewalls, and using up-to-date VPNs or other secure remote-access methods while operators pursue replacement or isolation of affected units.
