CVE-2025-51966 Cross-site scripting in n/a
Attackers can execute arbitrary JavaScript in uTools via crafted PDFs, potentially stealing data or performing unauthorized actions.
- 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-2025-51966?
CVE-2025-51966 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Sep 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
A cross-site scripting (XSS) vulnerability exists in the PDF preview functionality of uTools thru 7.1.1. When a user previews a specially crafted PDF file, embedded JavaScript code executes within the application's privileged context, potentially allowing attackers to steal sensitive data or perform unauthorized actions.
Weakness: CWE-79
Which versions are affected by CVE-2025-51966?
It affects 1 product.
Products include U-Tools Utools.
How do I fix CVE-2025-51966?
No fix has been published for CVE-2025-51966 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-2025-51966 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51966 exists.
Sources
Also known as GHSA-6frc-f3g3-vffp.