CVE-2025-26410Public exploit

Local shell access via shared recoverable credentials

Published Feb 11, 2025 · Updated Nov 3, 2025

Hard-coded credentials in Wattsense Bridge firmware before 6.4.1 allow physically proximate attackers to access a local login shell. Every affected device embeds the same user and root password hashes, and the recoverable user password authenticates at the serial-interface prompt. Physical circuit-board access and an exposed serial interface are required; successful use provides a normal-user shell on the appliance.

CVSS severity9.8
Critical
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in Wattsense Bridge firmware before 6.4.1 allow physically proximate attackers to access a local login shell. Every affected device embeds the same user and root password hashes, and the recoverable user password authenticates at the serial-interface prompt. Physical circuit-board access and an exposed serial interface are required; successful use provides a normal-user shell on the appliance.

The record

CVE
CVE-2025-26410
Published
Feb 11, 2025
Updated
Nov 3, 2025
Vendor
Wattsense
Product
Wattsense Bridge
Classifications
CWE-798, CAPEC-653, T1078.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.4.1

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Wattsense · Wattsense Bridgeversion=0 <6.4.1

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CAPEC-653Use of Known Operating System Credentials
T1078.001Valid Accounts: Default Accounts

Public exploit references

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Technologies

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Your stack

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