CVE-2024-48453
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on INOVANCE AM401_CPU1608TPTN programmable logic controllers via the ExecuteUserProgramUpgrade function. Attackers can gain complete control of affected devices without authentication. Organizations using these industrial control systems in manufacturing, energy, or critical infrastructure are affected.
💻 Affected Systems
- INOVANCE AM401_CPU1608TPTN
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of industrial control systems leading to physical damage, production shutdowns, safety system manipulation, or environmental harm.
Likely Case
Unauthorized access to PLCs allowing program modification, data theft, or disruption of industrial processes.
If Mitigated
Limited impact if devices are isolated in air-gapped networks with strict access controls and monitoring.
🎯 Exploit Status
Public GitHub repositories contain exploit details. The vulnerability requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.inovance.com/
Restart Required: Yes
Instructions:
1. Check vendor website for security advisories
2. Download firmware updates when available
3. Backup current configurations
4. Apply firmware update following vendor instructions
5. Restart device
6. Verify functionality
🔧 Temporary Workarounds
Network Segmentation
allIsolate AM401_CPU1608TPTN devices in dedicated VLANs with strict firewall rules
Access Control Lists
allImplement IP-based whitelisting to restrict access to PLC management interfaces
🧯 If You Can't Patch
- Implement strict network segmentation and zero-trust principles for industrial networks
- Deploy intrusion detection systems specifically monitoring for unauthorized PLC program uploads
🔍 How to Verify
Check if Vulnerable:
Check device model and firmware version. If using AM401_CPU1608TPTN without vendor-provided patches, assume vulnerable.Check Version:
Check via PLC programming software or web interface if availableVerify Fix Applied:
Verify firmware version matches vendor's patched release and test that ExecuteUserProgramUpgrade function requires proper authentication.📡 Detection & Monitoring
Log Indicators:
- Unauthorized program upload attempts
- Unexpected firmware modification events
- Authentication bypass logs
Network Indicators:
- Unexpected connections to PLC programming ports
- Traffic patterns matching exploit code
SIEM Query:
source="plc_logs" AND (event="program_upload" OR event="firmware_update") AND user="unknown"