# CVE-2021-47744: Cypress Solutions CTM-200/CTM-ONE 1.3.6 Hard-coded Credentials Remote Root

> Attackers can gain remote root access via Telnet or SSH using hard-coded credentials on Cypress Solutions CTM devices.

- **Severity:** Critical 9.3 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Dec 2025
- **Updated:** 2 Jan 2026
- **Also known as:** GHSA-v245-m4vw-4545

## What is CVE-2021-47744?

CVE-2021-47744 is a critical vulnerability in Cypress ONE, published on 31 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cypress Solutions CTM-200/CTM-ONE 1.3.6 contains hard-coded credentials vulnerability in Linux distribution that exposes root access. Attackers can exploit the static 'Chameleon' password to gain remote root access via Telnet or SSH on affected devices.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2021-47744?


## How do I fix CVE-2021-47744?

No fix has been published for CVE-2021-47744 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47744 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47744 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47744 and fix it if it is affected.

What it is: CVE-2021-47744 is a critical vulnerability in Cypress ONE, published on 31 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47744 exists.

Affected product: Cypress ONE. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-47744/ (Markdown: https://insights.sbomify.com/CVE-2021-47744/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47744
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47744
- OSV: https://osv.dev/vulnerability/CVE-2021-47744

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47744/
Summaries are generated and may contain mistakes; the official description above is the record.