# CVE-2026-73819: Ebyte NE2-D11 missing authentication in management interface

Source: https://junglewise.ai/threats/cve-2026-73819-ebyte-ne2-d11-missing-authentication-in-management-interface  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-31. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-73819 · Severity: critical · CVSS 9.8 · Published 2026-08-31

The Ebyte NE2-D11 is a network gateway device used in critical infrastructure (manufacturing and energy) to manage communications and device configuration. An unauthenticated attacker on the network can bypass authentication checks in the web management interface to gain administrative access, allowing them to modify device settings, access sensitive information, or disable the device entirely.

Technologies: [Ebyte NE2-D11](https://junglewise.ai/threats/technologies/ne2-d11). Vendors: [Ebyte](https://junglewise.ai/threats/vendors/ebyte).

## Quick answers

**Is CVE-2026-73819 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-73819 being exploited in the wild.

**How severe is CVE-2026-73819?** Critical severity, with a CVSS score of 9.8, published 31 August 2026.

**Which products and versions are affected?** Ebyte NE2-D11 Firmware FW-9167-0-11.

**Is there a fix for CVE-2026-73819?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-73819 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-73819?** Check whether you run Ebyte NE2-D11 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a missing authentication control (CWE-306) in the web management interface that does not consistently verify user identity before granting access to administrative functions. The flaw affects the vendor configuration utility and allows unauthenticated remote attackers on the network to perform privileged operations without credentials. An attacker can exploit this to access sensitive configuration, modify device settings, change administrative credentials, and disrupt device operation. Ebyte acknowledged the vulnerability and indicated a patch was under development, but has not provided status or availability information as of the advisory date.

## Affected products

- Ebyte NE2-D11 Firmware FW-9167-0-11

## Timeline

- 2026-08-25: disclosed
- 2026-08-31: advisory

## References

- [https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json)
- [https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06](https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06)

## Related threats

- [Ebyte NE2-D11 credentials exposure in configuration export](https://junglewise.ai/threats/cve-2026-77975-ebyte-ne2-d11-credentials-exposure-in-configuration-export)
- [Ebyte NE2-D11 privilege escalation via missing authorization](https://junglewise.ai/threats/cve-2026-77966-ebyte-ne2-d11-privilege-escalation-via-missing-authorization)
- [Ebyte NE2-D11 weak authentication hashing](https://junglewise.ai/threats/cve-2026-76133-ebyte-ne2-d11-weak-authentication-hashing)
- [Ebyte NE2-D11 authentication bypass in configuration utility](https://junglewise.ai/threats/cve-2026-77977-ebyte-ne2-d11-authentication-bypass-in-configuration-utility)
- [Ebyte NE2-D11 authentication bypass via client-side token manipulation](https://junglewise.ai/threats/cve-2026-76945-ebyte-ne2-d11-authentication-bypass-via-client-side-token)