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0 CVE-2025-2026 is a high-severity vulnerability affecting Moxa NPort 6100-G2/6200-G2 Series devices. It involves improper null termination in the device’s web API, allowing authenticated remote attackers with read-only web privileges to perform null byte injection. Exploiting this flaw can cause the device to reboot unexpectedly, leading to a denial-of-service (DoS) condition. The vulnerability requires no user interaction and has a CVSS score of 7.1, indicating significant risk. Although no known exploits are currently in the wild, the impact on availability is substantial for operational environments relying on these devices. European organizations using these serial device servers in industrial or critical infrastructure settings could face operational disruptions. Mitigation involves restricting access to the web API, applying vendor patches when available, and monitoring device behavior for unexpected reboots. Countries with strong industrial automation sectors and critical infrastructure deployments of Moxa products, such as Germany, France, and the UK, are most likely to be affected. Join the discussion | CVE Database V5 | 12/31/2025, 07:32:26 UTC Added: 12/31/2025, 07:43:55 UTC |
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