CVE-2025-27851

Critical

Description

The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a cross-site origin WebSocket hijacking attack. Among other uses, the WDU utilizes WebSockets to control settings, including administrative settings. This allows a network attacker to take full control of a WDU. To initiate an exploit of this vulnerability, the victim must (1) be utilizing a web browser on a multihomed host that has local interfaces on the Garmin Marine Network as well as another network, and (2) access a malicious third party website created by the attacker.

SeverityCritical
CVSS9.3
Exploit probability—
ProductGarmin Empirbus Wireless Display Unit Firmware
PublishedMay 13, 2026
First seenMay 13, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
garmin empirbus_wireless_display_unit_firmware1.4.6, 5.00—

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