# CVE-2019-25401: Bematech Printer MP-4200 TH Denial of Service

> Remote attackers can crash the printer's web service by sending malformed POST requests to the admin configuration page.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:** 18 Feb 2026
- **Updated:** 19 Feb 2026
- **Also known as:** GHSA-fvqj-2f9f-f8h7

## What is CVE-2019-25401?

CVE-2019-25401 is a high-severity denial of service vulnerability in Bematech MP-4200, published on 18 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Bematech (formerly Logic Controls, now Elgin) MP-4200 TH printer contains a denial of service vulnerability in the admin configuration page. Remote attackers can send crafted POST requests with malformed 'admin' and 'person' parameters to crash the printer's web service, causing a denial of service condition.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2019-25401?


## How do I fix CVE-2019-25401?

No fix has been published for CVE-2019-25401 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25401 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25401 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25401 and fix it if it is affected.

What it is: CVE-2019-25401 is a high-severity denial of service vulnerability in Bematech MP-4200, published on 18 Feb 2026. 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-2019-25401 exists.

Affected product: Bematech MP-4200. 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-2019-25401/ (Markdown: https://insights.sbomify.com/CVE-2019-25401/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25401
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25401
- OSV: https://osv.dev/vulnerability/CVE-2019-25401

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-25401/
Summaries are generated and may contain mistakes; the official description above is the record.