CVE-2026-26051
📋 TL;DR
This CVE describes a critical authentication bypass vulnerability in WebSocket endpoints used for OCPP (Open Charge Point Protocol) communication. Attackers can impersonate legitimate charging stations without authentication, allowing them to send malicious commands and manipulate charging infrastructure data. This affects electric vehicle charging systems that implement OCPP WebSocket endpoints without proper authentication.
💻 Affected Systems
- OCPP-compliant charging station management systems
- Electric vehicle charging infrastructure
⚠️ 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
Complete compromise of charging infrastructure allowing attackers to disable charging stations, manipulate billing data, cause physical damage to vehicles or equipment, and disrupt critical transportation infrastructure.
Likely Case
Unauthorized control of charging stations, manipulation of charging sessions, data corruption in backend systems, and potential financial fraud through billing manipulation.
If Mitigated
Limited impact with proper network segmentation and monitoring, but still presents authentication bypass risk if WebSocket endpoints remain exposed.
🎯 Exploit Status
Exploitation requires only WebSocket connection and knowledge of charging station identifiers, which may be discoverable through enumeration or information disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor-specific advisories
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-06
Restart Required: Yes
Instructions:
1. Review CISA advisory ICSA-26-062-06. 2. Contact your charging infrastructure vendor for specific patches. 3. Apply vendor-provided updates. 4. Restart affected systems. 5. Verify authentication is now required for WebSocket connections.
🔧 Temporary Workarounds
Network Segmentation
allIsolate charging infrastructure networks from untrusted networks
WebSocket Authentication
allImplement authentication mechanisms for WebSocket connections
🧯 If You Can't Patch
- Implement network-level authentication using VPNs or firewalls with strict access controls
- Deploy WebSocket proxies that enforce authentication before forwarding connections to backend systems
🔍 How to Verify
Check if Vulnerable:
Attempt to connect to OCPP WebSocket endpoint without authentication using a known station ID. If connection succeeds and commands can be issued, system is vulnerable.Check Version:
Vendor-specific - consult charging station management system documentationVerify Fix Applied:
Attempt same connection after patch - should fail with authentication error. Verify WebSocket handshake requires valid credentials.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated WebSocket connections
- OCPP commands from unknown stations
- Multiple failed authentication attempts followed by successful connection
Network Indicators:
- WebSocket traffic without authentication headers
- OCPP traffic from unexpected IP addresses
- Unusual command patterns in charging sessions
SIEM Query:
websocket AND (ocpp OR charging) AND NOT auth_success=true