CVE-2026-73819

Ebyte NA111-M Weak Authentication

Published Aug 31, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
The affected Ebyte

product's vendor configuration utility permits access to administrative
functions without verifying the operator's identity under certain
credential conditions. An unauthenticated attacker on the adjacent
network could modify critical settings or change access credentials,
potentially preventing legitimate administrators from managing the
device.

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
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Ebyte
Ebyte ebyte Na111-m Firmware
Vendors & Products Ebyte
Ebyte ebyte Na111-m Firmware
Type Values Removed Values Added
Description The affected Ebyte product's vendor configuration utility permits access to administrative functions without verifying the operator's identity under certain credential conditions. An unauthenticated attacker on the adjacent network could modify critical settings or change access credentials, potentially preventing legitimate administrators from managing the device.
Title Ebyte NA111-M Weak Authentication
Weaknesses CWE-1390
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Oct 5, 2026, 7:26 PM
Reserved
Aug 21, 2026, 7:56 PM
Status
Deferred
Published
Aug 31, 2026, 4:19 PM
Modified
Sep 1, 2026, 5:17 PM