Improper Authentication in Ebyte Gateway Configuration Utility
CVE-2026-77977

7.2HIGH

Key Information:

Vendor

Ebyte

Vendor
CVE Published:
27 August 2026

What is CVE-2026-77977?

The Ebyte gateway configuration utility lacks necessary authentication protocols, enabling an attacker on the adjacent network to execute critical administrative tasks. When default credentials are not changed, unauthorized users can reboot the device or restore it to factory settings, leading to a complete loss of configuration and disruption of service availability. This vulnerability highlights the importance of changing default credentials and securing administrative interfaces to prevent unauthorized access.

Affected Version(s)

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

References

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jithin Nambiar reported this vulnerability to CISA.
.