CVE-2026-76940 Ebyte NA111-M Improper Restriction of Excessive Authentication Attempts
Attackers can perform brute-force attacks on Ebyte NA111-M devices due to missing rate limiting, potentially leading to unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76940?
CVE-2026-76940 is a high-severity authentication bypass vulnerability in Ebyte NA111-M Firmware, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-307
Which versions are affected by CVE-2026-76940?
How do I fix CVE-2026-76940?
No fix has been published for CVE-2026-76940 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-76940 being exploited?
There is no known exploitation of CVE-2026-76940 in the wild and no public exploit code.
Sources
Also known as GHSA-cw56-r7cc-wcx4.