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CVE-2025-26410VulnerabilityPublished Updated

CVE-2025-26410: Wattsense Bridge · Use of Hard-coded Credentials

Affects Wattsense BridgeSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Feb 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Wattsense Wattsense BridgeAffected
  • =0
Fixed in–

AI-suggested

To mitigate this vulnerability, organizations should immediately upgrade all Wattsense Bridge devices to firmware version BSP 6.4.1 or later, where the hard-coded backdoor user has been removed. If upgrading is not immediately possible, physical security controls should be enhanced to restrict access to the serial interface, including locking device enclosures and monitoring access logs. Network segmentation should be implemented to isolate these devices from general IT networks, limiting exposure to potential attackers. Additionally, organizations should conduct regular audits to identify devices running vulnerable firmware versions and replace or update them accordingly. Employing intrusion detection systems that monitor for unusual access patterns on building automation networks can help detect exploitation attempts. Finally, coordinating with Wattsense for any available patches or security advisories and integrating these devices into the broader vulnerability management program is essential.

Description

The firmware of all Wattsense Bridge devices contain the same hard-coded user and root credentials. The user password can be easily recovered via password cracking attempts. The recovered credentials can be used to log into the device via the login shell that is exposed by the serial interface. The backdoor user has been removed in firmware BSP >= 6.4.1.

References

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