CVE-2022-38546: Zyxel NBG7510 Firmware

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A DNS misconfiguration was found in Zyxel NBG7510 firmware versions prior to V1.00(ABZY.3)C0, which could allow an unauthenticated attacker to access the DNS server when the device is switched to the AP mode.

Affected products

• Zyxel NBG7510 Firmware: up to and including 1.00\(abzy.2\)c0

Published 2022-12-21. Last modified 2026-06-17.