MasterLogic-200

Honeywell MasterLogic-200 PLC Ethernet Module Vulnerability Enables Unauthenticated Memory Overwrite and Controller Takeover (CVE-2026-79110)

Honeywell releases emergency firmware for MasterLogic-200 PLCs (CVE-2026-79110, CVSS 9.4) addressing an unauthenticated Ethernet stack buffer overflow.