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TI-2025-19366 Aliases CVE-2025-26409GHSA-9cmp-ppm3-hp8w

Access to Bootloader and Shell Over Serial Interface

Priority HIGH 65CWE-1191Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00333 26th percentileScored 2026-11-07
Fix Fixed Wattsense Bridge (Wattsense): 6.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
WattsenseWattsense Bridgebefore 6.4.16.4.1Patch availableCNA
  • Wattsense Bridge VendorWattsense Affected before 6.4.1 Fixed in 6.4.1 Patch available CNA

Remediation

  • Fix · CNA Wattsense Bridge (Wattsense) Fixed in 6.4.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Wattsense Bridge 6.4.1

    2 records Highest priority Priority HIGH 2 HIGH

    Other records, highest priority first

    • TI-2025-19367 Weak hard-coded credentials in Wattsense BridgePriority HIGH 82
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-26409
  2. 2026-10-03 Alias added: GHSA-9cmp-ppm3-hp8w

References

Advisory 1

Other 1

  • TI-2025-19367 Weak hard-coded credentials in Wattsense Bridge CVSS 3.1CRITICAL 9.8
  • TI-2025-19368 Authenticated Arbitrary Python File Upload via Plugin Manager CVSS 3.1HIGH 8.8
  • TI-2025-19365 Unprotected JTAG Interface CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences