CVE-2020-28221

CRITICAL
9.8
CVSS Score
Published: January 25, 2021 at 05:08 PM UTC
Updated: June 17, 2026 at 03:10 AM UTC
42 products affected across 1 vendorEcoStruxure Operator Terminal ExpertPro-face BLUEHmig5U

Using EcoStruxure™ Operator Terminal Expert 3.1 Service Pack 1A and prior running on Harmony HMIs HMIST6 Series, HMIG3U in HMIGTU Series, HMISTO Series and Pro-face BLUE 3.1 Service Pack 1A and prior running on Pro-face HMIs: ST6000 Series, SP-5B41 in SP5000 Series, GP4100 Series by N/A?

Get instant alerts when new vulnerabilities affect EcoStruxure™ Operator Terminal Expert 3.1 Service Pack 1A and prior running on Harmony HMIs HMIST6 Series, HMIG3U in HMIGTU Series, HMISTO Series and Pro-face BLUE 3.1 Service Pack 1A and prior running on Pro-face HMIs: ST6000 Series, SP-5B41 in SP5000 Series, GP4100 Series - before attackers find them.

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

Description

A CWE-20: Improper Input Validation vulnerability exists in EcoStruxure™ Operator Terminal Expert and Pro-face BLUE (version details in the notification) that could cause arbitrary code execution when the Ethernet Download feature is enable on the HMI.

Affected

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

schneider-electric-hmi-sto-501 (environment) · schneider-electric-hmi-sto-511 (environment) · schneider-electric-hmi-sto-512 (environment) · schneider-electric-hmi-sto-531 (environment) · schneider-electric-hmi-sto-532 (environment) · schneider-electric-hmig3u (environment) · schneider-electric-hmig3x (environment) · schneider-electric-hmig5u (environment) · schneider-electric-hmig5u2 (environment) · schneider-electric-hmist6200 (environment) · schneider-electric-hmist6400 (environment) · schneider-electric-hmist6500 (environment) · schneider-electric-hmist6600 (environment) · schneider-electric-hmist6700 (environment)
schneider-electric-gp-4104g (environment) · schneider-electric-gp-4104w (environment) · schneider-electric-gp-4105g (environment) · schneider-electric-gp-4105w (environment) · schneider-electric-gp-4106g (environment) · schneider-electric-gp-4106w (environment) · schneider-electric-gp-4107g (environment) · schneider-electric-gp-4107w (environment) · schneider-electric-sp-5400wa (environment) · schneider-electric-sp-5500tp (environment) · schneider-electric-sp-5500wa (environment) · schneider-electric-sp-5600ta (environment) · schneider-electric-sp-5600tp (environment) · schneider-electric-sp-5600wa (environment) · schneider-electric-sp-5660tp (environment) · schneider-electric-sp-5700tp (environment) · schneider-electric-sp-5700wc (environment) · schneider-electric-sp-5800wc (environment) · schneider-electric-sp-5b00 (environment) · schneider-electric-sp-5b10 (environment) · schneider-electric-sp-5b41 (environment) · schneider-electric-st-6200wa (environment) · schneider-electric-st-6400wa (environment) · schneider-electric-st-6500wa (environment) · schneider-electric-st-6600wa (environment) · schneider-electric-st-6700wa (environment)
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Remediation

No guide yet

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

References (1)

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-20

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