CVE-2020-10276CWE-798

RVD#2558: Default credentials on SICK PLC allows disabling safety features

Critical · published June 24, 2020

CVSS v3.0
9.8
EPSS
1%
Percentile
74.1
In the wild
Unconfirmed
What it is

🚨 Default passwords are a ticking time bomb! In this case, a safety PLC with a default password makes it embarrassingly easy for a potential attacker to upload malicious programs that could disable emergency systems. 🔥 Think of the safety PLC as a fire alarm system where the manual says the password to disarm it is written on the wall. Just like a thief could easily silencing the alarm, an attacker could exploit this easily accessible information to manipulate the system without raising any immediate concerns. This vulnerability could lead to a catastrophic failure, allowing someone to disable the emergency stop feature of a robot. If an object gets too close, the robot could continue operating unchecked, leading to potentially devastating accidents, and putting lives at risk.

Put simply

Think of the safety PLC as a fire alarm system where the manual says the password to disarm it is written on the wall. Just like a thief could easily silencing the alarm, an attacker could exploit this easily accessible information to manipulate the system without raising any immediate concerns. CVE-2020-10276 arises from the use of default passwords in the safety PLC, enabling an attacker to upload a manipulated program that disables critical safety features. The manipulation of the laser scanner configuration also compromises the device's safety integrity.

What to do

This vulnerability could lead to a catastrophic failure, allowing someone to disable the emergency stop feature of a robot. If an object gets too close, the robot could continue operating unchecked, leading to potentially devastating accidents, and putting lives at risk. Immediate action is required: change the default password to a strong, unique one and review all user access controls on the safety PLC. Conduct a thorough audit of your safety systems to ensure no unauthorized modifications have been made. You've got this! Follow these steps, and you'll bolster your security like a pro! 🛡️

The record
Technical detail
CVSS v3.0
9.8 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01498 · 74.1th percentile
Weakness
CWE-798 · Use of Hard-coded Credentials
Published
2020-06-24T04:50Z
EPSS history
Timeline
  • 24 JUN 04:50Z
    RVD#2558: Default credentials on SICK PLC allows disabling safety features
    cvelistv5