CVE-2018-25147: Microhardcorp Bullet-3g Firmware

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Microhard Systems IPn4G 1.1.0 contains hardcoded default credentials that cannot be changed through normal gateway operations. Attackers can exploit these default credentials to gain unauthorized root-level access to the device by logging in with predefined username and password combinations.

Affected products

• Microhardcorp Bullet-3g Firmware: version 1.2.0 only
• Microhardcorp Bullet-Lte Firmware: version 1.2.0 only
• Microhardcorp Bulletplus Firmware: version 1.3.0 only
• Microhardcorp Dragon-Lte Firmware: version 1.1.0 only
• Microhardcorp IPN3GB Firmware: version 2.2.0 only
• Microhardcorp IPN3GII Firmware: version 1.2.0 only
• Microhardcorp IPN4G Firmware: version 1.1.0 only
• Microhardcorp IPN4GB Firmware: version 1.1.6 only; version 1.1.0 only
• Microhardcorp IPN4GII Firmware: version 1.2.0 only
• Microhardcorp VIP4GB Firmware: version 1.1.6 only
• Microhardcorp VIP4GB Wifi-N Firmware: version 1.1.6 only

Published 2025-12-24. Last modified 2026-06-17.