CVE-2025-27851
Garmin WDU Cross-Site Origin WebSocket Hijacking
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.
INFO
Published Date :
May 13, 2026, 9:16 p.m.
Last Modified :
June 2, 2026, 7:04 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-27851
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Garmin WDU firmware to a patched version.
- Restrict network access to the WDU.
- Do not visit untrusted websites.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-27851.
| URL | Resource |
|---|---|
| https://garmin.com | Product |
| https://www8.garmin.com/support/ch.jsp?product=010-02642-00 | Release Notes |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-27851 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-27851
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-27851 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-27851 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 02, 2026
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:1.4.6:*:*:*:*:*:*:* OR cpe:2.3:h:garmin:empirbus_wireless_display_unit:v1:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:5.00:*:*:*:*:*:*:* OR cpe:2.3:h:garmin:empirbus_wireless_display_unit:v2:*:*:*:*:*:*:* Added Reference Type MITRE: https://garmin.com Types: Product Added Reference Type MITRE: https://www8.garmin.com/support/ch.jsp?product=010-02642-00 Types: Release Notes -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Added CWE CWE-352 -
New CVE Received by [email protected]
May. 13, 2026
Action Type Old Value New Value Added 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. Added Reference https://garmin.com Added Reference https://www8.garmin.com/support/ch.jsp?product=010-02642-00