CVE-2025-55078
📋 TL;DR
This vulnerability in Eclipse ThreadX allows attackers to cause denial of service by providing pointers to unmapped memory regions. The system call validation fails to check if pointers are outside module memory boundaries. This affects all systems running vulnerable versions of Eclipse ThreadX.
💻 Affected Systems
- Eclipse ThreadX
📦 What is this software?
Threadx by Eclipse
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash and denial of service, potentially requiring physical intervention to restart affected devices.
Likely Case
Service disruption and system instability leading to temporary unavailability of affected services.
If Mitigated
Minimal impact with proper memory protection mechanisms and segmentation in place.
🎯 Exploit Status
Exploitation requires knowledge of system call interfaces and memory layout. No public exploit code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.4.3
Vendor Advisory: https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-wcfg-5jpf-hhxq
Restart Required: No
Instructions:
1. Download Eclipse ThreadX version 6.4.3 or later from the official repository. 2. Replace the vulnerable ThreadX files with the patched version. 3. Recompile your application with the updated ThreadX library. 4. Deploy the updated firmware to affected devices.
🔧 Temporary Workarounds
Memory Protection Enhancement
allImplement additional memory protection mechanisms and boundary checks in application code
🧯 If You Can't Patch
- Implement strict input validation for all system calls that accept pointers
- Deploy network segmentation to isolate vulnerable systems from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check the ThreadX version in your firmware or source code. If using version earlier than 6.4.3, you are vulnerable.Check Version:
Check the TX_VERSION_MAJOR, TX_VERSION_MINOR, and TX_VERSION_PATCH defines in tx_api.hVerify Fix Applied:
Verify that ThreadX version 6.4.3 or later is integrated into your build system and deployed firmware.📡 Detection & Monitoring
Log Indicators:
- System crashes
- Memory access violation errors
- Unexpected system resets
Network Indicators:
- Sudden service unavailability
- Connection timeouts to affected devices
SIEM Query:
source="system_logs" AND ("memory violation" OR "access fault" OR "system crash") AND process="threadx"