What is CVE-2023-48316?

CVE-2023-48316 is a critical-severity vulnerability in Azure-Rtos Netxduo, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-12-05.

How severe is CVE-2023-48316?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Azure-Rtos Netxduo

CVE-2023-48316

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 snmp, smtp, ftp and dtls 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.

Vulnerability class: Buffer Overflow

Published 2023-12-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.043 (91.1th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000

Affected products

Azure-Rtos Netxduo — versions < 6.3.0
Microsoft Azure Rtos Netx Duo

Weakness classification (CWE)

References

github.com/azure-rtos/netxduo/security/advisories/GHSA-3cmf-r288-xhwq (Third Party Advisory)

Frequently asked questions

What is CVE-2023-48316?: CVE-2023-48316 is a critical-severity vulnerability in Azure-Rtos Netxduo, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-12-05.
How severe is CVE-2023-48316?: Critical severity. CVSS v3 base score is 9.8 out of 10.