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Vendor Solution
Users are advised to follow the applicable Security Hardening Guide for the MGate MB3000 or MGate 5000 Series when obtaining and updating firmware. The guides provide recommendations for securely obtaining firmware from official Moxa sources and performing firmware updates. Users should follow the applicable guidance to ensure that the correct and trusted firmware is obtained and that firmware updates are performed securely. For detailed mitigation guidance, please refer to the following Security Hardening Guides: * The Security Hardening Guide for the MGate 5000 Series * The Security Hardening Guide for the MGate MB3000 Series
Tracking
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Fri, 02 Oct 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Improper Cryptographic Signature Verification in Moxa MGate Firmware Update |
Fri, 02 Oct 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 02 Oct 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An improper verification of cryptographic signature vulnerability exists in protocol gateways because the device does not properly verify the cryptographic authenticity of firmware images before installation. An attacker with high privileges and access to the firmware update interface could provide a specially crafted or modified firmware image, causing it to be installed on the device. Successful exploitation could allow the attacker to execute unauthorized code, compromise the integrity and availability of the device, and persist malicious modifications across subsequent firmware updates. | |
| First Time appeared |
Moxa
Moxa mgate Mb3170 Series Moxa mgate Mb3270 Series |
|
| Weaknesses | CWE-347 | |
| CPEs | cpe:2.3:a:moxa:mgate_mb3170_series:1.0:*:*:*:*:*:*:* cpe:2.3:a:moxa:mgate_mb3270_series:1.0:*:*:*:*:*:*:* |
|
| Vendors & Products |
Moxa
Moxa mgate Mb3170 Series Moxa mgate Mb3270 Series |
|
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: Moxa
Published:
Updated: 2026-10-02T10:39:59.785Z
Reserved: 2026-09-07T06:34:04.814Z
Link: CVE-2026-86326
Updated: 2026-10-02T10:38:28.855Z
Status : Received
Published: 2026-10-02T11:17:36.330
Modified: 2026-10-02T11:17:36.330
Link: CVE-2026-86326
No data.
OpenCVE Enrichment
Updated: 2026-10-02T11:45:07Z
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CWE-347
Improper Verification of Cryptographic Signature