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CVE-2026-73819— Ebyte NA111-M Weak Authentication

Quick assessment

Affected
Ebyte Ebyte NA111-M Firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ebyte NA111-M是中国Ebyte公司的一款无线网络模块。 Ebyte NA111-M 9013-2-17版本存在授权问题漏洞，该漏洞源于供应商配置实用程序在特定凭据条件下允许访问管理功能而无需验证操作员身份，可能导致未认证的相邻网络攻击者修改关键设置或更改访问凭据，阻止合法管理员管理设备。

CVSS 9.8 · Critical EPSS 0.53% · P44

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ebyte Ebyte NA111-M Firmware 9013-2-17 affected
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I. Basic Information for CVE-2026-73819

Vulnerability Information
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Vulnerability Title
Ebyte NA111-M Weak Authentication
Source: CVE Program / CVE List V5
Vulnerability Description
The affected Ebyte product's vendor configuration utility permits access to administrative functions without verifying the operator's identity under certain credential conditions. An unauthenticated attacker on the adjacent network could modify critical settings or change access credentials, potentially preventing legitimate administrators from managing the device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1390
Source: CVE Program / CVE List V5
Vulnerability Title
Ebyte NA111-M 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ebyte NA111-M是中国Ebyte公司的一款无线网络模块。 Ebyte NA111-M 9013-2-17版本存在授权问题漏洞，该漏洞源于供应商配置实用程序在特定凭据条件下允许访问管理功能而无需验证操作员身份，可能导致未认证的相邻网络攻击者修改关键设置或更改访问凭据，阻止合法管理员管理设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ebyte Ebyte NA111-M Firmware 9013-2-17 -

II. Public POCs for CVE-2026-73819

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III. Intelligence Information for CVE-2026-73819

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Vendor Advisories for CVE-2026-73819 (1)

Same Patch Batch · Ebyte · 2026-08-31 · 4 CVEs total

CVE-2026-76133 9.8 CRITICAL Ebyte NA111-M Use of a Broken or Risky Cryptographic Algorithm
CVE-2026-77966 8.8 HIGH Ebyte NA111-M Missing Authorization
CVE-2026-77975 6.5 MEDIUM Ebyte NA111-M Cleartext Storage of Sensitive Information

IV. Related Vulnerabilities

Same product: Ebyte NA111-M Firmware
Same vendor: Ebyte
Same weakness: CWE-1390

V. Comments for CVE-2026-73819

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