CVE-2026-24696
📋 TL;DR
This vulnerability allows attackers to bypass rate limiting on WebSocket authentication requests, enabling denial-of-service attacks that disrupt legitimate charger telemetry or brute-force attacks to gain unauthorized access. It affects systems using the vulnerable WebSocket API implementation, particularly in industrial control and charging infrastructure.
💻 Affected Systems
- WebSocket API implementations in charging/telemetry systems
⚠️ 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 disruption of charger telemetry systems leading to operational shutdown, or unauthorized access to critical control systems allowing manipulation of charging infrastructure.
Likely Case
Service degradation through DoS attacks affecting telemetry data reliability, or successful brute-force attacks on weaker credentials.
If Mitigated
Minimal impact with proper rate limiting and monitoring in place, though authentication attempts may still be logged.
🎯 Exploit Status
Exploitation requires access to authentication endpoints but is technically simple using automated tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-08
Restart Required: Yes
Instructions:
1. Review vendor advisory for patch details. 2. Apply vendor-provided patch. 3. Restart affected services. 4. Verify rate limiting is functioning.
🔧 Temporary Workarounds
Implement WebSocket Rate Limiting
allAdd rate limiting to WebSocket authentication endpoints using reverse proxy or application controls
# Example nginx rate limiting:
limit_req_zone $binary_remote_addr zone=ws_auth:10m rate=10r/m;
location /ws-auth {
limit_req zone=ws_auth burst=20 nodelay;
proxy_pass http://backend;
}
Network Segmentation
linuxRestrict access to WebSocket endpoints to trusted networks only
# Example iptables rule:
iptables -A INPUT -p tcp --dport 443 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Implement network-level rate limiting using WAF or firewall rules
- Enable detailed authentication logging and monitoring for brute-force attempts
🔍 How to Verify
Check if Vulnerable:
Test WebSocket authentication endpoint with rapid consecutive requests; if unlimited attempts are allowed, system is vulnerable.Check Version:
Check application version via vendor-specific command or configuration fileVerify Fix Applied:
Attempt rapid authentication requests; verify requests are throttled or blocked after threshold.📡 Detection & Monitoring
Log Indicators:
- High frequency of authentication failures from single IP
- WebSocket connection spikes
- Authentication timeout errors
Network Indicators:
- Unusual WebSocket traffic patterns
- High volume of small authentication packets
- Sustained connections to WebSocket ports
SIEM Query:
source="websocket.log" | stats count by src_ip, user | where count > 100