CVE-2023-48691: Microsoft Azure Rtos Netx Duo

Critical severity, CVSS 9.8. EPSS: 3.1% chance of exploitation in the next 30 days.

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.

Affected products

• Microsoft Azure Rtos Netx Duo: before 6.3.0 (fixed in 6.3.0)

Published 2023-12-05. Last modified 2026-06-17.