CVE-2025-2026

High

Description

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.

SeverityHigh

CVSS7.1

Exploit probability—

ProductNPort 6100-G2/6200-G2 Series

PublishedDec 31, 2025

First seenDec 31, 2025

Weakness typeCWE-170CWE-170

How to fix

Vendor advisories

moxa.com/en/support/product-support/security-advisory/mpsa-251731-cve-2025-1977-cve-2025-2026-multiple-vulnerabilities-in-nport-6100-g2-6200-g2-series

Affected products

Product	Affected versions	Fixed in
Moxa NPort 6100-G2/6200-G2 Series	1.0.0	—

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