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

High 8.7 Published Updated

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

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

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

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.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-25401 being exploited?

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

Sources

Also known as GHSA-fvqj-2f9f-f8h7.

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