CVE-2018-11421: Moxa Oncell g3150-Hspa-T Firmware

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior use a proprietary monitoring protocol that does not provide confidentiality, integrity, and authenticity security controls. All information is sent in plain text, and can be intercepted and modified. The protocol is vulnerable to remote unauthenticated disclosure of sensitive information, including the administrator's password. Under certain conditions, it's also possible to retrieve additional information, such as content of HTTP requests to the device, or the previously used password, due to memory leakages.

Affected products

• Moxa Oncell g3150-Hspa-T Firmware: up to and including 1.6
• Moxa Oncell g3150-Hspa Firmware: up to and including 1.6

Published 2019-07-03. Last modified 2026-06-17.