CVE-2025-34080 CONPROSYS HMI System (CHS) < 3.7.7 Reflected Cross-Site Scripting

Medium 5.1 Published Updated

Reflected XSS in CONPROSYS HMI System allows attackers to execute scripts in user browsers via the getqsetting.php endpoint.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2025-34080?

CVE-2025-34080 is a medium-severity cross-site scripting vulnerability in Contec Co.,Ltd. CONPROSYS HMI System (CHS), published on 1 Jul 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Contec Co.,Ltd. CONPROSYS HMI System (CHS) is vulnerable to Cross-Site Scripting (XSS) in the getqsetting.php functionality that could allow reflected execution of scripts in the browser on interaction.This issue affects CONPROSYS HMI System (CHS): before 3.7.7.

Weakness: CWE-79

Which versions are affected by CVE-2025-34080?

It affects 1 product.

Products include Contec Conprosys Hmi System.

How do I fix CVE-2025-34080?

No fix has been published for CVE-2025-34080 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-34080 being exploited?

There is no known exploitation of CVE-2025-34080 in the wild and no public exploit code.

Sources

Also known as GHSA-8249-348w-qmmh.

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