CVE-2025-27853: n/a
The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows its authentication to be bypassed. The WDU web site only performs authentication with the client within the client's browser. The WebSockets used to communicate with the WDU server do not enforce any authentication. An attacker may bypass all authentication mechanisms by directly utilizing the remote APIs available on the websocket.
AI Analysis
Technical Summary
The Garmin WDU devices running versions v1 1.4.6 and v2 5.0 have a security flaw where the local web interface relies solely on client-side authentication within the browser. The WebSocket connections used for communication with the device do not require authentication, enabling an attacker to bypass authentication controls by directly interacting with the remote APIs exposed via WebSockets. This vulnerability is classified under CWE-306 (Missing Authentication for Critical Function). The CVSS 3.1 base score is 7.3, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability.
Potential Impact
An attacker can bypass the authentication mechanisms of the Garmin WDU local web interface by exploiting the unauthenticated WebSocket API access. This could lead to unauthorized access to device functions and data, potentially compromising confidentiality, integrity, and availability of the device. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should restrict access to the local web interface and WebSocket endpoints by network controls or physical security measures to prevent unauthorized access. Monitor vendor channels for updates regarding patches or official mitigations.
CVE-2025-27853: n/a
Description
The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows its authentication to be bypassed. The WDU web site only performs authentication with the client within the client's browser. The WebSockets used to communicate with the WDU server do not enforce any authentication. An attacker may bypass all authentication mechanisms by directly utilizing the remote APIs available on the websocket.
CVSS v3.1
Score 7.3high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Garmin WDU devices running versions v1 1.4.6 and v2 5.0 have a security flaw where the local web interface relies solely on client-side authentication within the browser. The WebSocket connections used for communication with the device do not require authentication, enabling an attacker to bypass authentication controls by directly interacting with the remote APIs exposed via WebSockets. This vulnerability is classified under CWE-306 (Missing Authentication for Critical Function). The CVSS 3.1 base score is 7.3, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability.
Potential Impact
An attacker can bypass the authentication mechanisms of the Garmin WDU local web interface by exploiting the unauthenticated WebSocket API access. This could lead to unauthorized access to device functions and data, potentially compromising confidentiality, integrity, and availability of the device. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should restrict access to the local web interface and WebSocket endpoints by network controls or physical security measures to prevent unauthorized access. Monitor vendor channels for updates regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2025-03-09T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a04e0c9cbff5d861008112f
Added to database: 05/13/2026, 20:36:25 UTC
Last enriched: 05/21/2026, 12:19:06 UTC
Last updated: 07/31/2026, 19:22:53 UTC
Views: 65
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