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CVE-2026-77977— Ebyte NE2-D11 Missing Authentication for Critical Function

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.

亿佰特（Ebyte）网关产品的厂商配置工具在默认凭据仍保留在配置中时，未要求身份验证即允许执行某些具有干扰性的管理操作。同一相邻网络中的未认证攻击者可以重启设备或恢复出厂设置，从而导致配置丢失和服务可用性受损。

CVSS 8.1 · High EPSS 0.23% · P13

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-2026-77977

Vulnerability Information
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Vulnerability Title
Ebyte NE2-D11 Missing Authentication for Critical Function
Source: CVE Program / CVE List V5
Vulnerability Description
Ebyte gateway product's vendor configuration utility does not require authentication before allowing certain disruptive administrative actions when default credentials remain configured. An unauthenticated attacker on the adjacent network could reboot the device or restore factory settings, resulting in a loss of configuration and service availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
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-2026-77977

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-77977

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Vendor Advisories for CVE-2026-77977 (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-2026-75813 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-2026-73809 7.5 HIGH Ebyte NE2-D11 Cleartext Transmission of Sensitive Information
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-306

V. Comments for CVE-2026-77977

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