CVE-2025-54816
📋 TL;DR
This vulnerability allows unauthenticated attackers to establish WebSocket connections to affected systems, bypassing authentication entirely. Attackers can access sensitive data or perform unauthorized actions, potentially leading to privilege escalation and system compromise. Any system using the vulnerable WebSocket endpoint without proper authentication controls is affected.
💻 Affected Systems
- Specific products not identified in provided references
📦 What is this software?
Evmapa by Evmapa
⚠️ 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 system compromise through privilege escalation, data exfiltration, and unauthorized control of critical functions.
Likely Case
Unauthorized access to sensitive data, manipulation of system operations, and potential lateral movement within the network.
If Mitigated
Limited to denial of service attempts or reconnaissance if proper network segmentation and monitoring are in place.
🎯 Exploit Status
Exploitation requires only WebSocket client tools and knowledge of the endpoint URL. No authentication bypass techniques needed since authentication is completely absent.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-08
Restart Required: No
Instructions:
1. Review the CISA advisory for specific vendor guidance
2. Implement authentication mechanisms for WebSocket endpoints
3. Update WebSocket server configurations to require authentication
4. Test authentication enforcement before deployment
🔧 Temporary Workarounds
Network Access Control
linuxRestrict access to WebSocket endpoints using firewall rules or network segmentation
iptables -A INPUT -p tcp --dport [websocket_port] -s [allowed_network] -j ACCEPT
iptables -A INPUT -p tcp --dport [websocket_port] -j DROP
Reverse Proxy Authentication
allPlace WebSocket endpoint behind reverse proxy that enforces authentication
# Configure nginx or Apache with authentication before proxying to WebSocket
🧯 If You Can't Patch
- Implement network segmentation to isolate WebSocket endpoints from sensitive systems
- Deploy Web Application Firewall (WAF) rules to detect and block unauthenticated WebSocket connections
🔍 How to Verify
Check if Vulnerable:
Attempt to establish WebSocket connection without authentication using tools like wscat or browser WebSocket APICheck Version:
Check WebSocket server version and configuration for authentication settingsVerify Fix Applied:
Test that unauthenticated WebSocket connections are rejected and only authenticated connections succeed📡 Detection & Monitoring
Log Indicators:
- WebSocket connection attempts without authentication tokens
- Unauthorized access patterns to WebSocket endpoints
- Failed authentication attempts followed by successful unauthenticated connections
Network Indicators:
- WebSocket handshake requests without authentication headers
- Unusual WebSocket traffic patterns from unauthorized IPs
- WebSocket connections bypassing normal authentication flows
SIEM Query:
websocket AND (NOT auth_token OR NOT session_id) AND response_code=101