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CVE-2026-73809— Ebyte NE2-D11 Cleartext Transmission of Sensitive Information

Quick assessment

Affected
Ebyte Ebyte NE2-D11 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.

某些亿联（Ebyte）网关产品中存在敏感信息明文传输漏洞。Web 管理界面未使用传输层加密充分保护敏感通信。能够访问网络流量的攻击者可能会截获用户与受影响设备之间传输的认证或会话相关信息。若该漏洞被成功利用，可能导致敏感信息泄露，并导致非授权访问设备管理功能。

CVSS 7.5 · High EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ebyte Ebyte NE2-D11 Firmware FW-9167-0-11 affected
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I. Basic Information for CVE-2026-73809

Vulnerability Information
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Vulnerability Title
Ebyte NE2-D11 Cleartext Transmission of Sensitive Information
Source: CVE Program / CVE List V5
Vulnerability Description
A cleartext transmission of sensitive information vulnerability exists in certain Ebyte gateway products. The web management interface does not adequately protect sensitive communications using transport-layer encryption. An attacker with access to network traffic could intercept authentication or session-related information transmitted between a user and the affected device. Successful exploitation could result in disclosure of sensitive information and unauthorized access to device management functionality.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文传输
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ebyte Ebyte NE2-D11 Firmware FW-9167-0-11 -

II. Public POCs for CVE-2026-73809

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III. Intelligence Information for CVE-2026-73809

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Vendor Advisories for CVE-2026-73809 (1)

Same Patch Batch · Ebyte · 2026-08-27 · 12 CVEs total

CVE-2026-71187 9.8 CRITICAL Ebyte NE2-D11 Use of Client-Side Authentication
CVE-2026-69658 9.8 CRITICAL Ebyte NE2-D11 Cleartext Transmission of Sensitive Information
CVE-2026-76179 9.8 CRITICAL Ebyte NE2-D11 Use of GET Request Method With Sensitive Query Strings
CVE-2026-73125 9.8 CRITICAL Ebyte NE2-D11 Missing Authentication for Critical Function
CVE-2026-75814 8.8 HIGH Ebyte NE2-D11 Cross-Site Request Forgery
CVE-2026-77977 8.1 HIGH Ebyte NE2-D11 Missing Authentication for Critical Function
CVE-2026-75813 7.5 HIGH Ebyte NE2-D11 Missing Authorization
CVE-2026-76940 7.5 HIGH Ebyte NE2-D11 Improper Restriction of Excessive Authentication Attempts
CVE-2026-76945 7.5 HIGH Ebyte NE2-D11 Use of Client-Side Authentication
CVE-2026-75548 5.4 MEDIUM Ebyte NE2-D11 Improper Restriction of Rendered UI Layers or Frames
CVE-2026-73839 4.6 MEDIUM Ebyte NE2-D11 Insufficiently Protected Credentials

IV. Related Vulnerabilities

Same product: Ebyte NE2-D11 Firmware
Same vendor: Ebyte
Same weakness: CWE-319

V. Comments for CVE-2026-73809

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