CVE-2025-6950: Moxa Edf-g1002-Bp Series

Critical severity, CVSS 9.9. EPSS: 0.6% chance of exploitation in the next 30 days.

An Use of Hard-coded Credentials vulnerability has been identified in Moxa’s network security appliances and routers. The system employs a hard-coded secret key to sign JSON Web Tokens (JWT) used for authentication. This insecure implementation allows an unauthenticated attacker to forge valid tokens, thereby bypassing authentication controls and impersonating any user. Exploitation of this vulnerability can result in complete system compromise, enabling unauthorized access, data theft, and full administrative control over the affected device. While successful exploitation can severely impact the confidentiality, integrity, and availability of the affected device itself, there is no loss of confidentiality or integrity within any subsequent systems.

Affected products

• Moxa Edf-g1002-Bp Series: from 1.0, up to and including 3.17
• Moxa Edr-8010 Series: from 1.0, up to and including 3.17
• Moxa Edr-g9010 Series: from 1.0, up to and including 3.14
• Moxa Nat-102 Series: from 1.0, up to and including 3.17
• Moxa Nat-108 Series: from 1.0, up to and including 3.16
• Moxa Oncell g4302-LTE4 Series: from 1.0, up to and including 3.13
• Moxa Tn-4900 Series: from 1.0, up to and including 3.14

Published 2025-10-17. Last modified 2026-06-17.