CVE-2025-13970
📋 TL;DR
OpenPLC_V3 lacks CSRF protection, allowing attackers to trick logged-in administrators into clicking malicious links that modify PLC settings or upload harmful programs. This affects all OpenPLC_V3 installations with web interfaces accessible to administrators. The vulnerability could disrupt or damage connected industrial control systems.
💻 Affected Systems
- OpenPLC_V3
⚠️ 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
An attacker could upload malicious programs to PLCs, causing physical damage to industrial equipment, production shutdowns, or safety hazards in critical infrastructure.
Likely Case
Attackers modify PLC configurations or upload programs causing operational disruption, data manipulation, or unauthorized control of industrial processes.
If Mitigated
With proper CSRF tokens and authentication controls, the attack surface is reduced to authenticated sessions only, limiting impact to credential compromise scenarios.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated administrators. No authentication bypass needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-10
Restart Required: Yes
Instructions:
1. Review CISA advisory ICSA-25-345-10. 2. Update OpenPLC_V3 to patched version. 3. Restart OpenPLC service. 4. Verify CSRF protection is enabled.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd CSRF token validation to all state-changing requests in OpenPLC web interface
Manual code modification required - implement anti-CSRF tokens in web forms
Network Segmentation
allIsolate OpenPLC web interface from untrusted networks
Configure firewall rules to restrict access to OpenPLC web interface
🧯 If You Can't Patch
- Implement strict network segmentation to isolate OpenPLC from user workstations
- Require multi-factor authentication for administrative access and implement session timeouts
🔍 How to Verify
Check if Vulnerable:
Test web forms for absence of CSRF tokens by inspecting HTTP requests for anti-CSRF headers or tokensCheck Version:
Check OpenPLC web interface version in admin panel or configuration filesVerify Fix Applied:
Verify that all POST/PUT/DELETE requests include valid CSRF tokens that are validated server-side📡 Detection & Monitoring
Log Indicators:
- Multiple failed CSRF token validations
- Unauthorized configuration changes from unexpected IPs
- PLC program uploads from non-admin workstations
Network Indicators:
- HTTP requests to OpenPLC web interface without CSRF tokens
- Configuration changes via GET requests
SIEM Query:
source="openplc.log" AND (event="config_change" OR event="program_upload") AND NOT user="admin"