Is CVE-2025-26409 actively exploited?

No active exploitation of CVE-2025-26409 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-26409 be exploited remotely?

No. CVE-2025-26409 requires physical access to exploit.

What is the CVSS score of CVE-2025-26409?

CVE-2025-26409 has a CVSS score of 6.8 (MEDIUM).

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MEDIUM

CVE-2025-26409

CWE-1191Published: February 11, 2025· Updated: Jun 17, 2026

6.8

CVSS v3.1

Official Description

A serial interface can be accessed with physical access to the PCB of Wattsense Bridge devices. After connecting to the interface, access to the bootloader is possible, as well as a Linux login prompt. The bootloader access can be used to gain a root shell on the device. This issue is fixed in recent firmware versions BSP >= 6.4.1.

NVD Source

Technical Analysis

CVE-2025-26409 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.