CVE-2025-9368
📋 TL;DR
A denial-of-service vulnerability exists in Rockwell Automation's 432ES-IG3 Series A GuardLink EtherNet/IP Interface. Exploitation causes the device to become unresponsive, requiring a manual power cycle to restore functionality. This affects industrial control systems using these specific safety interface modules.
💻 Affected Systems
- 432ES-IG3 Series A GuardLink EtherNet/IP Interface
⚠️ 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
Critical safety systems become unavailable, potentially halting production lines or disabling safety monitoring in industrial environments until physical intervention.
Likely Case
Targeted device becomes unresponsive, disrupting communication between safety devices and controllers, requiring on-site technician to power cycle the unit.
If Mitigated
Impact limited to single device if network segmentation isolates it from potential attackers; production continues with redundant systems.
🎯 Exploit Status
Based on CWE-770 (Allocation of Resources Without Limits or Throttling), likely involves resource exhaustion via crafted network packets.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Rockwell Automation Security Advisory SD1764 for specific firmware versions
Vendor Advisory: https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1764.html
Restart Required: Yes
Instructions:
1. Download updated firmware from Rockwell Automation Product Compatibility & Download Center. 2. Follow firmware update procedures in product documentation. 3. Verify successful update and functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices in dedicated VLANs with strict firewall rules limiting EtherNet/IP traffic to authorized controllers only.
Access Control Lists
allImplement network ACLs to restrict communication to/from affected devices to only necessary industrial protocols and trusted IP addresses.
🧯 If You Can't Patch
- Implement strict network segmentation with industrial DMZ architecture
- Deploy intrusion detection systems monitoring for abnormal EtherNet/IP traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Rockwell's advisory; devices with firmware versions listed as vulnerable in SD1764 are affected.Check Version:
Use Rockwell Automation programming software (Studio 5000 Logix Designer or similar) to read controller properties and check module firmware version.Verify Fix Applied:
Verify firmware version matches or exceeds patched version specified in Rockwell advisory SD1764.📡 Detection & Monitoring
Log Indicators:
- Device communication loss logs
- Unexpected device resets
- Increased EtherNet/IP error counters
Network Indicators:
- Abnormal EtherNet/IP packet rates to affected devices
- Traffic patterns matching resource exhaustion attacks
SIEM Query:
source="industrial_network" AND (protocol="EtherNet/IP" AND dest_ip="affected_device_ip" AND packet_count > threshold)