CVE-2021-22772

CRITICAL
9.8
CVSS Score
Published: July 21, 2021 at 10:41 AM UTC
Updated: June 17, 2026 at 03:37 AM UTC
7 products affected across 1 vendorT200P FirmwareT200E FirmwareT200I Firmware

Using 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) by N/A?

Get instant alerts when new vulnerabilities affect 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) - before attackers find them.

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ sc2-04dnp-07000102v ≤ sc2-04iec-07000100v ≤ sc2-04mod-07000100
schneider-electric-t200e (same device)
v ≤ sc2-04dnp-07000102v ≤ sc2-04iec-07000100v ≤ sc2-04mod-07000100
schneider-electric-easergy-t200 (same device)
v ≤ sc2-04dnp-07000102v ≤ sc2-04iec-07000100v ≤ sc2-04mod-07000100
schneider-electric-t200p (same device)
v ≤ 2-4MOD-7000100
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-306

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