---
id: CVE-2026-69658
title: Ebyte NA111-M Cleartext Transmission of Sensitive Information
summary: |-
  MQTT credentials and control traffic are transmitted in cleartext, 
  exposing sensitive information to network-level attackers. This may 
  enable unauthorized device impersonation and disruption of messaging 
  functions.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-319
vendor: Ebyte
product: Ebyte NA111-M Firmware
affected:
  - na111-m_firmware 9013-2-17
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-08-28T13:49:04.090845Z'
published: '2026-08-27'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T19:25:22.529Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-69658'
references:
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06'
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json
tags:
  - cve.org
epss: 0.00344
epssPercentile: 0.2563
ingestedAt: '2026-10-05T20:32:56.660Z'
---

## Overview

MQTT credentials and control traffic are transmitted in cleartext, 
exposing sensitive information to network-level attackers. This may 
enable unauthorized device impersonation and disruption of messaging 
functions.

## Affected

- `na111-m_firmware 9013-2-17`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

Ebyte acknowledged receipt of the reported vulnerabilities and indicated
 that a patch was under development. However, the vendor has not 
responded to subsequent requests for coordination, and CISA has not been
 informed of the status or availability of the patch. Users are 
encouraged to reach out to Ebyte for more information.