CVE-2026-73819

CRITICAL 9.8

Ebyte NA111-M Weak Authentication

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-1390
Vendor	ebyte
Product	ebyte na111-m firmware
Published	Aug 31, 2026
Last Updated	Aug 31, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Ebyte / Ebyte NA111-M Firmware

9013-2-17

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Jithin Nambiar reported this vulnerability to CISA.