CVE-2023-48692
Memory Safety in Microsoft Azure Rtos Netx Duo ≤ 6.3.0
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HSummary
CVE-2023-48692 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Microsoft Azure Rtos Netx Duo. Its CVSS base score is 9.0 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 13% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Azure RTOS NetX Duo is a TCP/IP network stack for deeply embedded real-time and IoT applications that contains memory overflow vulnerabilities in components handling icmp, tcp, snmp, dhcp, nat, and ftp. These issues, present in version 6.2.1 and earlier, are tracked under CWE-787 and CWE-825 and can result in remote code execution. The CVSS 3.1 score is 9.0 with a network attack vector, high complexity, and no required privileges or user interaction.
An unauthenticated remote attacker can send crafted network packets to trigger the overflows and achieve arbitrary code execution on the affected device with impacts to confidentiality, integrity, and availability across security boundaries.
The GitHub security advisories state that the fixes are included in NetX Duo release 6.3.0 and that users should upgrade, as no workarounds are known. The EPSS score remains flat at 0.0503 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-52736
Vulnerability Data
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…
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related to icmp, tcp, snmp, dhcp, nat and ftp 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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.
Lifecycle management includes secure development and maintenance phases that reduce memory-safety defects.
Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.
Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development and acceptance can detect and prevent out-of-bounds write defects.
Secure development life cycle mandates practices that prevent out-of-bounds writes.
Application security requirements can specify bounds-checking and safe memory handling.
Secure architecture and engineering principles reduce the likelihood of buffer overflows.
Secure coding directly addresses out-of-bounds writes through language choice and coding standards.
Change management can enforce review gates that catch unsafe memory operations before deployment.