CVE-2025-55083
📋 TL;DR
This vulnerability in NetX Duo (part of Eclipse ThreadX) allows attackers to read two bytes beyond allocated memory boundaries due to an incorrect bounds check. It affects systems using NetX Duo versions before 6.4.4 for network communication. The impact is limited to information disclosure rather than code execution.
💻 Affected Systems
- Eclipse ThreadX NetX Duo
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Sensitive data leakage from adjacent memory, potentially exposing credentials, session tokens, or other application data stored near the vulnerable buffer.
Likely Case
Application crash or instability due to reading invalid memory, potentially causing denial of service in network services.
If Mitigated
Minimal impact with proper memory isolation and ASLR, though some information disclosure may still occur.
🎯 Exploit Status
Requires network access to vulnerable service and ability to trigger specific network conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.4.4
Vendor Advisory: https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-9hw5-4xcv-jprm
Restart Required: No
Instructions:
1. Update NetX Duo to version 6.4.4 or later. 2. Recompile your application with the updated library. 3. Deploy the updated binary to affected systems.
🔧 Temporary Workarounds
Disable vulnerable protocol features
allIf possible, disable or restrict the specific network protocol features that trigger the vulnerable code path.
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems from untrusted networks.
- Deploy intrusion detection systems to monitor for anomalous memory access patterns.
🔍 How to Verify
Check if Vulnerable:
Check NetX Duo version in your application's build configuration or by examining linked libraries.Check Version:
Check build configuration files or use 'strings' command on binary to find NetX Duo version strings.Verify Fix Applied:
Confirm NetX Duo version is 6.4.4 or later in your application build.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected network protocol errors
Network Indicators:
- Unusual network packets targeting NetX Duo services
- Repeated connection attempts to trigger memory conditions
SIEM Query:
source="application_logs" AND ("segmentation fault" OR "access violation" OR "NetX Duo error")