CVE-2026-77977

Ebyte NA111-M Missing Authentication for Critical Function

Published Aug 27, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Ebyte acknowledged receipt of the reported vulnerabilities and indicated that a patch was under development. However, the vendor has not responded to subsequent requests for coordination, and CISA has not been informed of the status or availability of the patch. Users are encouraged to reach out to Ebyte for more information.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Ebyte NE2-D11 Missing Authentication for Critical Function Ebyte NA111-M Missing Authentication for Critical Function
Type Values Removed Values Added
First Time appeared Ebyte
Ebyte ebyte Ne2-d11 Firmware
Vendors & Products Ebyte
Ebyte ebyte Ne2-d11 Firmware
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Ebyte NE2-D11 Missing Authentication for Critical Function
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Oct 5, 2026, 7:28 PM
Reserved
Aug 21, 2026, 7:56 PM
Status
Deferred
Published
Aug 28, 2026, 12:18 AM
Modified
Aug 31, 2026, 7:18 PM