PT-2025-54289 · Moxa · Nport 6100-G2/6200-G2 Series

Cory Yh Tseng · Published 2025-12-31 · Updated 2025-12-31 · CVE-2025-2026

Positive Technologies (AI Summary)

CVSS v4.0

7.1

High

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions NPort 6100-G2/6200-G2 Series (affected versions not specified)

Description A security issue exists in the NPort 6100-G2/6200-G2 Series that allows remote attackers to execute a null byte injection through the device’s web API. Successful exploitation may cause the device to reboot, resulting 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. The API endpoint is susceptible to null byte injection attacks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-170

Related Identifiers

CVE-2025-2026

Affected Products

Nport 6100-G2/6200-G2 Series

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-2026 · Security Note
• https://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 · Vendor Advisory
• https://t.me/cveNotify/147302 · Telegram Post
• https://t.me/CVEtracker/41050 · Telegram Post
• https://twitter.com/CVEnew/status/2006332191517852132 · Twitter Post
• https://t.me/cveNotify/147301 · Telegram Post