PatchSiren

GPL Odorizers CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

HIGH GPL Odorizers CVE published 2026-04-09

CVE-2026-4436

CVE-2026-4436 is a high-severity OT issue in GPL Odorizers GPL750 systems where a low-privileged remote attacker can send Modbus packets that change register values used by odorant injection logic. The result can be too much or too little odorant entering a gas line, creating an operational and safety concern for affected sites. CISA’s advisory was published on 2026-04-09 and recommends updating to the la [truncated]