CVE-2025-26408 Unprotected JTAG Interface

Medium 6.1 Published Updated

Physical access to the JTAG interface allows attackers to extract data and modify firmware on Wattsense Bridge devices.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-26408?

CVE-2025-26408 is a medium-severity vulnerability in Wattsense Bridge, published on 11 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-1191

Which versions are affected by CVE-2025-26408?

How do I fix CVE-2025-26408?

No fix has been published for CVE-2025-26408 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-26408 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-26408 exists.

Sources

Also known as GHSA-hrwq-g9x9-jmq2.

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