Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-28221


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.


Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 42 products from schneider-electric, from schneider-electric, from schneider-electric and 39 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-01-26T18:15:47.600

Last Modified

2026-06-17T03:10:13.747

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-20

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application schneider-electric ecostruxure_operator_terminal_expert 3.1 Yes
Application schneider-electric ecostruxure_operator_terminal_expert 3.1 Yes
Hardware schneider-electric hmi_sto_501 - No
Hardware schneider-electric hmi_sto_511 - No
Hardware schneider-electric hmi_sto_512 - No
Hardware schneider-electric hmi_sto_531 - No
Hardware schneider-electric hmi_sto_532 - No
Hardware schneider-electric hmig3u - No
Hardware schneider-electric hmig3x - No
Hardware schneider-electric hmig5u - No
Hardware schneider-electric hmig5u2 - No
Hardware schneider-electric hmist6200 - No
Hardware schneider-electric hmist6400 - No
Hardware schneider-electric hmist6500 - No
Hardware schneider-electric hmist6600 - No
Hardware schneider-electric hmist6700 - No
Application schneider-electric pro-face_blue 3.1 Yes
Application schneider-electric pro-face_blue 3.1 Yes
Hardware schneider-electric gp-4104g - No
Hardware schneider-electric gp-4104w - No
Hardware schneider-electric gp-4105g - No
Hardware schneider-electric gp-4105w - No
Hardware schneider-electric gp-4106g - No
Hardware schneider-electric gp-4106w - No
Hardware schneider-electric gp-4107g - No
Hardware schneider-electric gp-4107w - No
Hardware schneider-electric sp-5400wa - No
Hardware schneider-electric sp-5500tp - No
Hardware schneider-electric sp-5500wa - No
Hardware schneider-electric sp-5600ta - No
Hardware schneider-electric sp-5600tp - No
Hardware schneider-electric sp-5600wa - No
Hardware schneider-electric sp-5660tp - No
Hardware schneider-electric sp-5700tp - No
Hardware schneider-electric sp-5700wc - No
Hardware schneider-electric sp-5800wc - No
Hardware schneider-electric sp-5b00 - No
Hardware schneider-electric sp-5b10 - No
Hardware schneider-electric sp-5b41 - No
Hardware schneider-electric st-6200wa - No
Hardware schneider-electric st-6400wa - No
Hardware schneider-electric st-6500wa - No
Hardware schneider-electric st-6600wa - No
Hardware schneider-electric st-6700wa - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For schneider-electric's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.