CVE-2026-86325 — Moxa / MGate MB3170 Series

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Moxa / MGate MB3170 Series	affected 1.0 through 4.7
Moxa / MGate MB3270 Series	affected 1.0 through 4.7

CWE

CWE-121

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.