What’s Vulnerable › Vulnerabilities

CVE-2025-27851

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-13 · updated 2026-06-17
• Weakness: CWE-352

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.

Affected products

• Garmin Empirbus Wireless Display Unit Firmware: 1.4.6, 5.00

References

• https://garmin.com
• https://www8.garmin.com/support/ch.jsp?product=010-02642-00

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