CVE-2021-47744CWE-798

Cypress Solutions CTM-200/CTM-ONE 1.3.6 Hard-coded Credentials Remote Root

Critical · published December 31, 2025

CVSS v4.0
9.3
EPSS
0%
Percentile
24.7
In the wild
Unconfirmed
What it is

🚨 Hard-coded credentials are lurking in the shadows! The Cypress Solutions CTM-200/CTM-ONE version 1.3.6 has a static 'Chameleon' password, leaving a door wide open for attackers! 🔥 Think of it like a restaurant that uses the same code for every customer’s meal — once someone figures out the recipe, they’re free to waltz in and change the menu for everyone. In this case, the static password is an all-access pass for anyone with the right info. An attacker could gain remote root access via Telnet or SSH, allowing them to take complete control of the device. Imagine someone being able to walk right into your house, change everything, and leave without a trace! This could lead to data breaches, service disruptions, and a complete loss of system integrity.

Put simply

Think of it like a restaurant that uses the same code for every customer’s meal — once someone figures out the recipe, they’re free to waltz in and change the menu for everyone. In this case, the static password is an all-access pass for anyone with the right info. This vulnerability arises from hard-coded credentials that remain unchanged in the Linux distribution of the Cypress Solutions CTM-200/CTM-ONE, allowing unauthorized users to exploit this flaw for remote access.

What to do

An attacker could gain remote root access via Telnet or SSH, allowing them to take complete control of the device. Imagine someone being able to walk right into your house, change everything, and leave without a trace! This could lead to data breaches, service disruptions, and a complete loss of system integrity. Immediately update to the latest version of the CTM-200/CTM-ONE to eliminate this vulnerability. Disable Telnet where possible and switch to more secure methods like SSH with key-based authentication. Regularly audit your configurations to ensure no hard-coded credentials exist in your systems. You've got this! Follow these steps, and you'll ensure your systems are secure in no time! 🛡️

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00329 · 24.7th percentile
Weakness
CWE-798 · Use of Hard-coded Credentials
Published
2025-12-31T18:39Z
EPSS history
Timeline
  • 31 DEC 18:39Z
    Cypress Solutions CTM-200/CTM-ONE 1.3.6 Hard-coded Credentials Remote Root
    cvelistv5