CVE-2025-26408

Unprotected JTAG Interface

Published Feb 11, 2025 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
The JTAG interface of Wattsense Bridge devices can be accessed with physical access to the PCB. After connecting to the interface, full access to the device is possible. This enables an attacker to extract information, modify and debug the device's firmware. All known versions are affected.

Remediation

Vendor Solution

The device is meant to be installed at a restricted access physical location according to the vendor and exploitation requires more attacker knowledge and higher physical access. The issue will be put in the backlog of the Wattsense team.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-4191 The JTAG interface of Wattsense Bridge devices can be accessed with physical access to the PCB. After connecting to the interface, full access to the device is possible. This enables an attacker to extract information, modify and debug the device's firmware. All known versions are affected.
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00022}

epss

{'score': 0.00025}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The JTAG interface of Wattsense Bridge devices can be accessed with physical access to the PCB. After connecting to the interface, full access to the device is possible. This enables an attacker to extract information, modify and debug the device's firmware. All known versions are affected.
Title Unprotected JTAG Interface
Weaknesses CWE-1191
References

Subscriptions

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Weaknesses

Sources

Status
PUBLISHED
Assigner
SEC-VLab
Published
Updated
Nov 3, 2025, 9:12 PM
Reserved
Feb 10, 2025, 7:48 AM
Status
Deferred
Published
Feb 11, 2025, 10:15 AM
Modified
Jun 17, 2026, 9:01 AM