CVE-2025-6950

Severity: critical (CVSS 9.9 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-17 · updated 2026-10-18
Weakness: CWE-798

Description

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 through 3.17
Moxa EDR-8010 Series: from 1.0 through 3.17
Moxa EDR-G9010 Series: from 1.0 through 3.14
Moxa NAT-102 Series: from 1.0 through 3.17
Moxa NAT-108 Series: from 1.0 through 3.16
Moxa OnCell G4302-LTE4 Series: from 1.0 through 3.13
Moxa TN-4900 Series: from 1.0 through 3.14

References

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-258121-cve-2025-6892,-cve-2025-6893,-cve-2025-6894,-cve-2025-6949,-cve-2025-6950-multiple-vulnerabilities-in-netwo

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