CVE-2020-28221CWE-20

A CWE-20: Improper Input Validation vulnerability exists in EcoStruxure™ Operator Terminal Expert and Pro-face BLUE (version details in the notification) that…

published January 25, 2021

CVSS
—
EPSS
2%
Percentile
81.9
In the wild
Unconfirmed
What it is

⚠️ A flaw lurking in EcoStruxure™ Operator Terminal Expert could lead to arbitrary code execution, all triggered by enabling a single feature! 🔥 Think of this vulnerability like a vending machine that doesn’t check your coins — if you slip in a counterfeit, you could get all the snacks without paying! An attacker could exploit this oversight to run malicious code on the Human-Machine Interface (HMI), potentially compromising essential systems. This could lead to unauthorized access and a chaotic operational environment, making it an alarmingly dangerous scenario!

Put simply

Think of this vulnerability like a vending machine that doesn’t check your coins — if you slip in a counterfeit, you could get all the snacks without paying! This vulnerability arises from improper input validation, allowing remote code execution when the Ethernet Download feature is enabled on affected HMI systems. It’s like being able to send a secret message that opens the door to the entire control center without proper checks.

What to do

An attacker could exploit this oversight to run malicious code on the Human-Machine Interface (HMI), potentially compromising essential systems. This could lead to unauthorized access and a chaotic operational environment, making it an alarmingly dangerous scenario! To mitigate this risk, disable the Ethernet Download feature if not in use, and ensure you’re on the latest version of EcoStruxure™ Operator Terminal Expert and Pro-face BLUE. Regularly review and validate input across your systems to strengthen your defenses. You've got this! With a few adjustments, you can turn this potential threat into a success story! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02139 · 81.9th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2021-01-25T17:08Z
EPSS history
Timeline
  • 25 JAN 17:08Z
    A CWE-20: Improper Input Validation vulnerability exists in EcoStruxure™ Operator Terminal Expert and Pro-face BLUE (version details in the notification) that…
    cvelistv5