---
id: CVE-2026-111548
title: "A stack-based buffer overflow vulnerability\_exists in the web management interface of affected Moxa wireless device servers"
summary: "A stack-based buffer overflow vulnerability\_exists in the web management interface of affected Moxa wireless device servers. An authenticated remote attacker with low privileges could exploit insufficient bounds checking of user-supplied…"
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-121
vendor: Moxa
product: NPort W2150A-W4/W2250A-W4 Series
affected:
  - nport_w2150a-w4_w2250a-w4_series >= 1.0 <= 1.5
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T10:17:26.193Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111548'
references:
  - url: >-
      https://www.moxa.com/en/support/product-support/security-advisory/mpsa-261250-cve-2026-111548-stack-buffer-overflow-vulnerability-in-wireless-device-servers
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.281Z'
epss: 0.00344
epssPercentile: 0.28092
---

## Overview

A stack-based buffer overflow vulnerability exists in the web management interface of affected Moxa wireless device servers. An authenticated remote attacker with low privileges could exploit insufficient bounds checking of user-supplied input, causing the web management service to become unresponsive. Restoring the service requires power cycling the affected device, while other device functions remain operational.

## Affected

- `nport_w2150a-w4_w2250a-w4_series >= 1.0 <= 1.5`

## Remediation

Please refer to Moxa's security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-261250-cve-2026-111548-stack-buffer-overflow-vulnerability-in-wireless-device-servers