CVE-2025-9464
📋 TL;DR
A denial-of-service vulnerability in ArmorStart LT industrial motor controllers allows attackers to crash the CIP port by sending specially crafted packets. This affects industrial control systems using vulnerable ArmorStart LT devices, potentially disrupting motor operations and production processes.
💻 Affected Systems
- Rockwell Automation ArmorStart LT
📦 What is this software?
Armorstart Lt Firmware by Rockwellautomation
⚠️ Risk & Real-World Impact
Worst Case
Complete loss of motor control in critical industrial processes, leading to production shutdowns, equipment damage, or safety incidents.
Likely Case
Temporary disruption of motor operations requiring manual intervention and device restart, causing production delays.
If Mitigated
Isolated impact on individual motor controllers with minimal production disruption if proper network segmentation is in place.
🎯 Exploit Status
Vulnerability discovered through fuzzing. Exploitation requires network access to the CIP port but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Rockwell Automation advisory SD1768 for specific firmware versions
Vendor Advisory: https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1768.html
Restart Required: Yes
Instructions:
1. Download firmware update from Rockwell Automation website. 2. Connect to device using appropriate programming software. 3. Upload new firmware. 4. Restart device. 5. Verify firmware version.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ArmorStart LT devices in separate VLANs with strict firewall rules limiting CIP traffic to authorized sources only.
Disable Unnecessary CIP Services
allConfigure devices to disable CIP services not required for operation.
🧯 If You Can't Patch
- Implement strict network access controls allowing only trusted devices to communicate with ArmorStart LT CIP ports
- Monitor network traffic for abnormal CIP packet patterns and implement automated alerting
🔍 How to Verify
Check if Vulnerable:
Check firmware version against Rockwell Automation advisory SD1768. Devices with firmware versions listed as vulnerable are affected.Check Version:
Use Rockwell Automation programming software (Studio 5000 Logix Designer or similar) to read device firmware version.Verify Fix Applied:
Verify firmware version matches patched version specified in Rockwell Automation advisory. Test CIP connectivity and functionality.📡 Detection & Monitoring
Log Indicators:
- Device restart logs
- CIP communication failure logs
- Network timeout errors
Network Indicators:
- Unusual CIP packet patterns
- Multiple malformed CIP requests to port 44818
- Sudden cessation of normal CIP traffic
SIEM Query:
source_port:44818 AND (packet_size:>1500 OR protocol_anomaly:true)