CVE-2026-86326

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.

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Produits concernés

• Moxa MGate MB3170 Series
• Moxa MGate MB3270 Series

Scores CVSS

Faiblesses (CWE)

• CWE-347

Références

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

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories