# CVE-2025-1863: Insecure default settings for recorder products

> Attackers can access and modify critical data on Yokogawa recorders because authentication is disabled by default in the factory settings.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Apr 2025
- **Updated:** 18 Apr 2025
- **Also known as:** GHSA-5rj6-rcrv-5v5p

## What is CVE-2025-1863?

CVE-2025-1863 is a critical vulnerability in Yokogawa Electric Corporation CX1000 / CX2000 Paperless Recorders, published on 18 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Insecure default settings have been found in recorder products provided by Yokogawa Electric Corporation. The default setting of the authentication function is disabled on the affected products. Therefore, when connected to a network with default settings, anyone can access all functions related to settings and operations. As a result, an attacker can illegally manipulate and configure important data such as measured values and settings.
This issue affects GX10 / GX20 / GP10 / GP20 Paperless Recorders: R5.04.01 or earlier; GM Data Acquisition System: R5.05.01 or earlier; DX1000 / DX2000 / DX1000N Paperless Recorders: R4.21 or earlier; FX1000 Paperless Recorders: R1.31 or earlier; μR10000 / μR20000 Chart Recorders: R1.51 or earlier; MW100 Data Acquisition Units: All versions; DX1000T / DX2000T Paperless Recorders: All versions; CX1000 / CX2000 Paperless Recorders: All versions.

Weakness: CWE-1188 (Initialization of a Resource with an Insecure Default)

## Which versions are affected by CVE-2025-1863?


## How do I fix CVE-2025-1863?

No fix has been published for CVE-2025-1863 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-1863 being exploited?

There is no known exploitation of CVE-2025-1863 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-1863 and fix it if it is affected.

What it is: CVE-2025-1863 is a critical vulnerability in Yokogawa Electric Corporation CX1000 / CX2000 Paperless Recorders, published on 18 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-1863 in the wild and no public exploit code.

Affected product: Yokogawa Electric Corporation CX1000 / CX2000 Paperless Recorders. 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-2025-1863/ (Markdown: https://insights.sbomify.com/CVE-2025-1863/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-1863
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-1863
- OSV: https://osv.dev/vulnerability/CVE-2025-1863

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-1863/
Summaries are generated and may contain mistakes; the official description above is the record.