Is CVE-2025-27852 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-27852 being exploited in the wild.

How severe is CVE-2025-27852?

Medium severity, with a CVSS score of 5, published 13 May 2026.

Which products and versions are affected?

Garmin EmpirBus WDU v1 1.4.6; Garmin EmpirBus WDU v2 5.0.

Is there a fix for CVE-2025-27852?

A patch was published on 2026-04-02: Fixed in WDUv2 software version 5.20 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2025-27852 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2025-27852?

Check whether you run Garmin EmpirBus WDU v1, Garmin EmpirBus WDU v2, Garmin EmpirBus Wireless Display Unit v1 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-27852: Garmin EmpirBus WDU reflected XSS in web interface

CVE-2025-27852 · Severity: medium · CVSS 5 · Published 2026-05-13

A security vulnerability exists in the Garmin EmpirBus Wireless Display Unit (WDU), a device used for marine electronic system monitoring and control. An attacker on the same local network can trick a user into clicking a malicious link, allowing the attacker to run unauthorized code in the user's browser. This could lead to unauthorized administrative access to the device, potentially allowing the attacker to change system settings or disrupt marine operations.

Technologies: Garmin EmpirBus WDU v1, Garmin EmpirBus WDU v2. Vendors: Garmin.

Quick answers

Is CVE-2025-27852 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-27852 being exploited in the wild.
How severe is CVE-2025-27852?: Medium severity, with a CVSS score of 5, published 13 May 2026.
Which products and versions are affected?: Garmin EmpirBus WDU v1 1.4.6; Garmin EmpirBus WDU v2 5.0.
Is there a fix for CVE-2025-27852?: A patch was published on 2026-04-02: Fixed in WDUv2 software version 5.20 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-27852 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2025-27852?: Check whether you run Garmin EmpirBus WDU v1, Garmin EmpirBus WDU v2, Garmin EmpirBus Wireless Display Unit v1 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected cross-site scripting (XSS) vulnerability exists in the web interface of Garmin EmpirBus Wireless Display Unit (WDU) v1 (firmware 1.4.6) and v2 (firmware 5.0). The flaw is caused by improper neutralization of user-supplied input during web page generation (CWE-79). An attacker on the local network segment can exploit this by inducing a victim to visit a specially crafted URL and interact with a page element. Successful exploitation allows the execution of arbitrary JavaScript in the context of the WDU web interface, which can be leveraged to gain full administrative access to the device. The issue is resolved in WDUv2 firmware version 5.20 and later.

Affected products

Garmin EmpirBus Wireless Display Unit (WDU) v1 1.4.6
Garmin EmpirBus Wireless Display Unit (WDU) v2 5.0

Timeline

2026-05-13: disclosed
2026-05-13: advisory
2026-04-02: patched: Fixed in WDUv2 software version 5.20

References

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