CVE-2025-55080
📋 TL;DR
This vulnerability in Eclipse ThreadX allows attackers to bypass memory protection mechanisms and perform arbitrary memory read/write operations when memory protection is enabled. It affects all systems running vulnerable versions of Eclipse ThreadX with memory protection enabled. This could lead to privilege escalation, data corruption, or complete system compromise.
💻 Affected Systems
- Eclipse ThreadX
📦 What is this software?
Threadx by Eclipse
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover through privilege escalation, arbitrary code execution, or permanent denial of service by corrupting critical memory structures.
Likely Case
Privilege escalation allowing attackers to bypass security boundaries, read sensitive data, or modify system behavior.
If Mitigated
Limited impact if memory protection is disabled, though this reduces overall system security.
🎯 Exploit Status
Exploitation requires existing code execution capability to trigger the vulnerable syscalls with malicious parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.4.3
Vendor Advisory: https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-76hh-wrj5-hr2v
Restart Required: Yes
Instructions:
1. Download Eclipse ThreadX version 6.4.3 or later from the official repository. 2. Replace the vulnerable ThreadX library in your embedded system. 3. Recompile your application with the updated library. 4. Deploy the updated firmware/software to affected devices. 5. Restart the system to apply changes.
🔧 Temporary Workarounds
Disable Memory Protection
allTemporarily disable the memory protection feature to prevent exploitation, though this reduces overall system security.
# Reconfigure ThreadX build with TX_DISABLE_ERROR_CHECKING or disable memory protection flags
🧯 If You Can't Patch
- Implement strict application sandboxing to limit the impact of memory manipulation
- Deploy runtime monitoring for unusual memory access patterns or syscall behavior
🔍 How to Verify
Check if Vulnerable:
Check the ThreadX version in your embedded system firmware. If using version <6.4.3 with memory protection enabled, the system is vulnerable.Check Version:
# Check ThreadX version in source code or compiled binary - typically defined in tx_port.h or build configurationVerify Fix Applied:
Verify the ThreadX library version is 6.4.3 or later and that memory protection remains functional.📡 Detection & Monitoring
Log Indicators:
- Unusual syscall patterns with memory addresses
- Memory protection violation alerts
- Unexpected process privilege changes
Network Indicators:
- Not directly network detectable - requires endpoint monitoring
SIEM Query:
Process monitoring for ThreadX syscalls with unusual parameter patterns or memory access violations