Paper/Archive/CVE-2026-86325

CVE-2026-86325

Moxa MGate MB3170 Series — A stack-based buffer overflow vulnerability exists in protocol gateways' account management interface.

Description · from the CVE record

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

ProductAffectedFixed inSource
MGate MB3170 Series1.0 – 4.7–CNA
MGate MB3270 Series1.0 – 4.7–CNA

Scores by source

Moxa (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

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