CVE-2021-22772: Schneider Electric t200e Firmware

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier) that could cause unauthorized operation when authentication is bypassed.

Affected products

• Schneider Electric t200e Firmware: up to and including sc2-04mod-07000100; up to and including sc2-04iec-07000100; up to and including sc2-04dnp-07000102
• Schneider Electric t200i Firmware: up to and including sc2-04mod-07000100; up to and including sc2-04iec-07000100; up to and including sc2-04dnp-07000102
• Schneider Electric t200p Firmware: up to and including sc2-04mod-07000100; up to and including sc2-04iec-07000100; up to and including sc2-04dnp-07000102

Published 2021-07-21. Last modified 2026-06-17.