CVE-2026-86326

HIGH
8.6
CVSS Score
Published: October 2, 2026 at 10:21 AM UTC
Updated: October 2, 2026 at 07:10 PM UTC
2 products affected across 1 vendorMGate MB3170MGate MB3270

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Severity
HIGH8.6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHMoxa
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-347

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