CVE-2026-86325

Critical

Description

A stack-based buffer overflow vulnerability exists in protocol gateways' account management interface. The vulnerability is caused by insufficient length validation of the `account_name` parameter when processing account management requests. An attacker authenticated as a read-only user to the web management interface could supply a specially crafted account name that exceeds the size of the internal stack buffer, resulting in corruption of program execution flow. Successful exploitation could allow an attacker to read sensitive information from device memory, including credentials, modify arbitrary memory contents, and disrupt device availability.

SeverityCritical
CVSS9.4
Exploit probability—
ProductMGate MB3170 Series
PublishedOct 2, 2026
First seenOct 2, 2026
Weakness typeCWE-121CWE-121

How to fix

Affected products

ProductAffected versionsFixed in
Moxa MGate MB3170 Series1.0 ≤ v ≤ 4.7—
Moxa MGate MB3270 Series1.0 ≤ v ≤ 4.7—

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CVE-2026-86325 · MGate MB3170 Series · Dark Radar