CVE-2025-52549
📋 TL;DR
CVE-2025-52549 allows attackers to predict the root Linux password on vulnerable E3 Site Supervisor Control devices by analyzing device parameters. This enables complete system compromise of affected industrial control systems. Organizations using E3 Site Supervisor Control with firmware below version 2.31F01 are at risk.
💻 Affected Systems
- E3 Site Supervisor Control
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to industrial process manipulation, data exfiltration, lateral movement to other systems, and potential physical damage to controlled infrastructure.
Likely Case
Unauthorized root access allowing configuration changes, data theft, and persistence establishment for future attacks.
If Mitigated
Limited impact if devices are isolated, monitored, and have additional authentication layers, though risk remains due to predictable credentials.
🎯 Exploit Status
The Armis research provides detailed exploitation methodology. Attackers need only access device parameters (often publicly available) to generate the predictable password.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.31F01
Vendor Advisory: https://www.armis.com/research/frostbyte10/
Restart Required: Yes
Instructions:
1. Download firmware version 2.31F01 from vendor portal. 2. Backup current configuration. 3. Apply firmware update via management interface. 4. Reboot device. 5. Verify new firmware version and change root password.
🔧 Temporary Workarounds
Change root password manually
linuxManually set a strong, unpredictable root password instead of relying on generated password
passwd root
Disable root SSH access
linuxPrevent direct root login via SSH while maintaining administrative access through sudo
sed -i 's/^PermitRootLogin.*/PermitRootLogin no/' /etc/ssh/sshd_config
systemctl restart sshd
🧯 If You Can't Patch
- Isolate affected devices in separate network segments with strict firewall rules
- Implement network monitoring and alerting for unusual root login attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version via device web interface or SSH: if version is below 2.31F01, device is vulnerableCheck Version:
cat /etc/version or check via web interfaceVerify Fix Applied:
Confirm firmware version is 2.31F01 or higher and test that root password cannot be predicted using known parameters📡 Detection & Monitoring
Log Indicators:
- Unexpected root login attempts
- Successful root logins from unusual sources
- Authentication failures followed by successful root access
Network Indicators:
- SSH brute force attempts targeting root account
- Unusual outbound connections from industrial control devices
SIEM Query:
source="auth.log" (user="root" AND success) OR (user="root" AND failure) | stats count by src_ip