CVE-2025-27852 Cross-site scripting in n/a

Medium 5.0 Published 13 May 2026 Updated 14 May 2026

Reflected XSS in Garmin WDU allows local attackers to execute JavaScript and gain admin access if the victim visits a URL and clicks an element.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-27852?

CVE-2025-27852 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a reflected cross site scripting (XSS) attack. This allows an attacker on the local network segment to execute arbitrary JavaScript code within the context of the WDU webpage. Full administrator level access to the device is possible. To initiate an exploit of this vulnerability, the victim must execute two actions: (1) view a specific URL served by the WDU, and (2) click an element on the rendered page.

Weakness: CWE-79

Which versions are affected by CVE-2025-27852?

It affects 1 product.

Products include Garmin Empirbus Wireless Display Unit Firmware.

How do I fix CVE-2025-27852?

No fix has been published for CVE-2025-27852 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-2025-27852 being exploited?

There is no known exploitation of CVE-2025-27852 in the wild and no public exploit code.

Sources

Also known as GHSA-qcwv-872h-7hpj.