What’s Vulnerable › Vulnerabilities

CVE-2023-48315: Azure RTOS NetX Duo Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-05 · updated 2026-06-17
• Weakness: CWE-787

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 remote code execution due to memory overflow vulnerabilities in Azure RTOS NETX Duo. The affected components include processes/functions related to ftp and sntp in RTOS v6.2.1 and below. The fixes have been included in NetX Duo release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• azure-rtos netxduo: before 6.3.0 — fixed in 6.3.0
• azure-rtos netxduo: before 6.3.0

How to fix

Upgrade to a fixed version: azure-rtos netxduo 6.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/azure-rtos/netxduo/security/advisories/GHSA-rj6h-jjg2-7gf3
• https://github.com/azure-rtos/netxduo/security/advisories/GHSA-rj6h-jjg2-7gf3

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