CVE-2026-76940

HIGH 7.5

Ebyte NA111-M Improper Restriction of Excessive Authentication Attempts

CVSS Score

7.5

EPSS Score

0.5%

EPSS Percentile

41th

The affected Ebyte device does not restrict repeated authentication attempts through rate limiting or account lockout mechanisms. This could allow an attacker to perform automated authentication attacks against deployments that rely on password based authentication.

CWE	CWE-307
Vendor	ebyte
Product	ebyte na111-m firmware
Published	Aug 27, 2026
Last Updated	Oct 5, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

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 J reported this vulnerability to CISA.