CVE-2025-2523
📋 TL;DR
An integer underflow vulnerability in Honeywell Experion PKS and OneWireless WDM's Control Data Access component allows attackers to manipulate communication channels, potentially leading to remote code execution. This affects industrial control systems running specific versions of these Honeywell products. Organizations using these systems in critical infrastructure are at risk.
💻 Affected Systems
- Honeywell Experion PKS
- Honeywell OneWireless WDM
⚠️ 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
Remote code execution leading to complete system compromise, process disruption, safety system manipulation, and potential physical damage in industrial environments.
Likely Case
Denial of service, process disruption, and unauthorized access to control systems with potential for data exfiltration or manipulation.
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only causing service disruption without full compromise.
🎯 Exploit Status
Integer underflow vulnerabilities typically require specific knowledge of the protocol and system architecture, but industrial control systems often have well-documented protocols.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Experion PKS: 520.2 TCU9 HF1, 530.1 TCU3 HF1; OneWireless: 322.5, 331.1
Vendor Advisory: https://process.honeywell.com/
Restart Required: Yes
Instructions:
1. Download patches from Honeywell support portal. 2. Schedule maintenance window for industrial systems. 3. Apply patches following Honeywell's specific industrial control system update procedures. 4. Test system functionality post-update. 5. Document the update process.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems from untrusted networks and implement strict firewall rules.
Access Control Restrictions
allImplement strict authentication and authorization controls for accessing control system interfaces.
🧯 If You Can't Patch
- Implement network segmentation to isolate affected systems from untrusted networks
- Deploy intrusion detection systems specifically configured for industrial control system protocols
🔍 How to Verify
Check if Vulnerable:
Check system version against affected versions list. Review Honeywell documentation for version identification procedures.Check Version:
Consult Honeywell system documentation for version checking commands specific to each product.Verify Fix Applied:
Verify system version matches patched versions: 520.2 TCU9 HF1, 530.1 TCU3 HF1 for Experion PKS; 322.5, 331.1 for OneWireless.📡 Detection & Monitoring
Log Indicators:
- Unexpected communication patterns to Control Data Access component
- System crashes or restarts
- Unusual process behavior in industrial controllers
Network Indicators:
- Anomalous traffic patterns to industrial control system ports
- Unexpected protocol manipulation attempts
SIEM Query:
Search for: (source_ip contains industrial_network) AND (destination_port in [industrial_ports]) AND (protocol_anomaly = true)