Critical

Remote Code Execution in Azure RTOS NetX Duo (Memory Overflow)

IdentifiersCVE-2023-48692CWE-120

CVE-2023-48692 is a memory overflow vulnerability in Azure RTOS NetX Duo, a TCP/IP stack used in embedded and IoT applications. The vulnerability affects components handling ICMP, TCP, SNMP, DHCP, NAT, and FTP in NetX Duo versions 6.2.1 and below. An attacker can exploit this flaw to achieve remote code execution on affected devices, such as Rockwell Automation Micro800 PLCs, by sending specially crafted network packets that trigger the overflow condition.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows remote code execution on affected devices, potentially granting attackers full control over critical infrastructure systems. This could lead to disruption of operations, unauthorized access, or further compromise of industrial control environments. The vulnerability is remotely exploitable with low attack complexity and affects widely deployed PLCs in sectors such as energy, manufacturing, and water systems.

Mitigation

If you can’t patch tonight, do this now.

There are no known workarounds for this vulnerability. As interim measures, minimize network exposure of affected devices, segment control system networks, use firewalls to restrict access, and ensure remote access is secured with up-to-date VPNs. Follow Rockwell Automation and CISA security best practices and monitor for suspicious activity.

Remediation

Patch, then assume compromise.

Upgrade Azure RTOS NetX Duo to version 6.3.0 or later, which contains the necessary patches. For Rockwell Automation Micro800 PLCs, apply the latest firmware updates (V23.011 or later for affected models) as provided by the vendor. Ensure all dependent products using vulnerable NetX Duo versions are updated accordingly.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Microsoft CorporationAzure Rtos Netx Duooperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

1 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2023-48692

NVD

nvd.nist.gov/vuln/detail/CVE-2023-48692

MITRE CWE · CWE-120

cwe.mitre.org

Third Party Advisory

github.com/azure-rtos/netxduo/security/advisories/GHSA-m2rx-243p-9w64