PT-2026-104202 · Moxa · Mgate Mb3170 Series+1

CVE-2026-86326

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Published

2026-10-02

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Updated

2026-10-02

CVSS v4.0

8.6

High

VectorAV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.

Fix

Improper Verification of Cryptographic Signature

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Weakness Enumeration

Related Identifiers

CVE-2026-86326

Affected Products

Mgate Mb3170 Series
Mgate Mb3270 Series