---
id: CVE-2026-77966
title: Ebyte NA111-M Missing Authorization
summary: "The affected\_Ebyte \n\nproduct\_does not provide separation between limited and administrative \nmanagement functions. A low privileged authenticated attacker could \naccess security sensitive configuration functions and modify settings \nthat…"
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-862
vendor: Ebyte
product: Ebyte NA111-M Firmware
affected:
  - na111-m_firmware 9013-2-17
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-31T15:49:47.303625Z'
published: '2026-08-31'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T19:22:28.810Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-77966'
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: 0.00442
epssPercentile: 0.36213
ingestedAt: '2026-10-05T20:32:56.662Z'
---

## Overview

The affected Ebyte 

product does not provide separation between limited and administrative 
management functions. A low privileged authenticated attacker could 
access security sensitive configuration functions and modify settings 
that affect the confidentiality, integrity, or availability of the 
device.

## 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.