The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a cross-site…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-352.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:1.4.6:*:*:*:*:*:*:* | 1.4.6 | Vulnerable | Garmin |
| cpe:2.3:h:garmin:empirbus_wireless_display_unit:v1:*:*:*:*:*:*:* | v1 | Running on | Garmin |
| cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:5.00:*:*:*:*:*:*:* | 5.00 | Vulnerable | Garmin |
| cpe:2.3:h:garmin:empirbus_wireless_display_unit:v2:*:*:*:*:*:*:* | v2 | Running on | Garmin |
- cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:1.4.6:*:*:*:*:*:*:* Versions 1.4.6 Vulnerable ·Garmin
- cpe:2.3:h:garmin:empirbus_wireless_display_unit:v1:*:*:*:*:*:*:* Versions v1 Running on ·Garmin
- cpe:2.3:o:garmin:empirbus_wireless_display_unit_firmware:5.00:*:*:*:*:*:*:* Versions 5.00 Vulnerable ·Garmin
- cpe:2.3:h:garmin:empirbus_wireless_display_unit:v2:*:*:*:*:*:*:* Versions v2 Running on ·Garmin
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-27851
- 2026-10-03 Alias added: GHSA-frpq-7mr9-hx8p
More Garmin Empirbus Wireless Display Unit Firmware vulnerabilities
- TI-2025-20615 The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a symlink… CVSS 3.1HIGH 7.5
- TI-2025-20618 The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows its… CVSS 3.1HIGH 7.3
- TI-2025-20617 The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a reflected… CVSS 3.1MEDIUM 5.0
Sources
- CVE-2025-27851 · CVE Program
- CVE-2025-27851 · NVD
- FIRST EPSS
- GHSA-frpq-7mr9-hx8p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences