CVE-2026-86326 — Moxa / MGate MB3170 Series

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Moxa / MGate MB3170 Series	affected 1.0
Moxa / MGate MB3270 Series	affected 1.0

CWE

CWE-347

References

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269540-cve-2026-86325,-cve-2026-86326-two-vulnerabilities-in-protocol-gateways

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.