CVE-2026-71187: CWE-603 Use of Client-Side Authentication in Ebyte Ebyte NA111-M Firmware
Description
CVE-2026-71187 is a critical vulnerability in the Ebyte NA111-M Firmware version 9013-2-17. The firmware uses client-side authentication logic that can be replicated by unauthenticated attackers. This allows attackers to generate valid authentication requests and bypass authentication controls, gaining administrative access to the device.
CVSS v3.1
Score 9.8critical
Affected software
Ebyte
Ebyte NA111-M Firmware
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-71187) affects Ebyte NA111-M Firmware version 9013-2-17. It stems from the use of client-side authentication logic, which can be replicated by attackers without authentication. As a result, attackers can craft valid authentication requests and bypass the device's authentication mechanisms, leading to unauthorized administrative access. The CVSS v3.1 score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows unauthenticated attackers to bypass authentication controls and gain administrative access to the affected device. This can lead to full compromise of device functionality and potentially the network it is connected to.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the device to trusted users only and monitor for suspicious activity related to authentication attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-08-20T15:03:17.023Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a916b39acd9273b49cabdd1
Added to database: 08/28/2026, 11:04:25 UTC
Last enriched: 10/12/2026, 21:30:34 UTC
Last updated: 10/13/2026, 18:48:23 UTC
Views: 71
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