CVE-2025-3020 Wiesemann & Theis: Multiple W&T Products are vulnerable to cross-site-scripting
A low-privileged remote attacker can execute arbitrary scripts via crafted payloads in configuration fields of W&T industrial gateways.
- 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-2025-3020?
CVE-2025-3020 is a medium-severity cross-site scripting vulnerability in Wiesemann & Theis ERP-Gateway 12x Digital Input, 6x Digital Relais, published on 6 May 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
An low privileged remote Attacker can execute arbitrary web scripts or HTML via a crafted payload injected into several fields of the configuration webpage with limited impact.
Weakness: CWE-79
Which versions are affected by CVE-2025-3020?
How do I fix CVE-2025-3020?
No fix has been published for CVE-2025-3020 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-2025-3020 being exploited?
There is no known exploitation of CVE-2025-3020 in the wild and no public exploit code.
Sources
Also known as GHSA-wj33-6r5j-2626.