CVE-2025-2026: Moxa Nport 6100-g2/6200-g2 Series

High severity, CVSS 7.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The NPort 6100-G2/6200-G2 Series is affected by a high-severity vulnerability (CVE-2025-2026) that allows remote attackers to execute a null byte injection through the device’s web API. This may lead to an unexpected device reboot and result in a denial-of-service (DoS) condition. An authenticated remote attacker with web read-only privileges can exploit the vulnerable API to inject malicious input. Successful exploitation may cause the device to reboot, disrupting normal operations and causing a temporary denial of service.

Affected products

• Moxa Nport 6100-g2/6200-g2 Series: version 1.0.0 only

Published 2025-12-31. Last modified 2026-06-17.