What’s Vulnerable › Vulnerabilities

CVE-2026-76940: Ebyte NA111-M Improper Restriction of Excessive Authentication Attempts

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-08-31
• Weakness: CWE-307

Description

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.

Affected products

• Ebyte NA111-M Firmware: 9013-2-17

References

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

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