CVE-2026-77977: Ebyte NA111-M Firmware

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Ebyte gateway product's vendor configuration utility does not require authentication before allowing certain disruptive administrative actions when default credentials remain configured. An unauthenticated attacker on the adjacent network could reboot the device or restore factory settings, resulting in a loss of configuration and service availability.

Affected products

• Ebyte Ebyte NA111-M Firmware: version 9013-2-17 only

Published 2026-08-28. Last modified 2026-08-31.