Ebyte NE2-D11 firmware contains an authentication bypass vulnerability due to the use of insecure client-side logic, allowing unauthenticated attacker...
Description
Ebyte NE2-D11 firmware contains an authentication bypass vulnerability due to the use of insecure client-side logic, allowing unauthenticated attackers to gain administrative access.
AI Analyst Comment
Remediation
Update Ebyte Ebyte NE2-D11 Firmware to the latest version. Monitor for exploitation attempts and review access logs.
---METADATA---
VENDOR: Ebyte
PRODUCT: NE2-D11 Firmware
AFFECTED_VERSIONS: FW-9167-0-11
CONFIDENCE: high
MISSING: none
CREDITS: Jithin Nambiar reported this vulnerability to CISA. (finder)
SOURCES_JSON: [{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06","name":null,"tags":[]},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json","name":null,"tags":[]}]
---END_METADATA---
Description Summary:
Ebyte NE2-D11 firmware contains an authentication bypass vulnerability due to the use of insecure client-side logic, allowing unauthenticated attackers to gain administrative access.
Executive Summary:
The Ebyte NE2-D11 firmware is vulnerable to an unauthenticated administrative access bypass, presenting a critical risk to device integrity and control.
Vulnerability Details
CVE-ID: CVE-2026-71187
Affected Software: Ebyte NE2-D11 Firmware
Affected Versions: FW-9167-0-11
Vulnerability: This vulnerability, categorized as CWE-603, stems from the device relying on client-side authentication logic. An unauthenticated attacker can forge authentication requests to fully bypass security controls and achieve administrative privileges on the device.
Business Impact
The ability for an unauthenticated user to gain administrative control over the Ebyte device poses a severe threat to operational continuity and data security. With a CVSS score of 9.8, this flaw facilitates complete compromise of the device, which could be leveraged to disrupt industrial processes or gain a foothold within the internal network. Unauthorized access at this level may result in significant downtime, loss of control over physical hardware, and potential safety implications.
Remediation Plan
Immediate Action: Update the Ebyte NE2-D11 firmware to the latest version provided by the vendor to resolve the client-side authentication flaw.
Proactive Monitoring: Review device access logs for unusual administrative logins or requests originating from unauthorized IP addresses.
Compensating Controls: Isolate the affected devices behind a firewall or within a restricted management network to prevent direct exposure to untrusted networks.
Exploitation Status
Public Exploit Available: Unknown
Analyst Notes: As of Aug 27, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The reliance on client-side logic makes this vulnerability inherently easy to exploit for any attacker with network access to the device.
Analyst Recommendation
Given the critical nature of this vulnerability and the potential for full administrative takeover, organizations must prioritize patching the affected firmware immediately. Do not rely on network perimeter security alone, as the vulnerability resides in the core authentication logic of the device. Ensure that all affected units are updated to the secure version provided by Ebyte to mitigate the risk of unauthorized access.