CVE-2025-24317
📋 TL;DR
This vulnerability allows remote unauthenticated attackers to cause denial-of-service conditions in affected HMI devices by exploiting resource allocation without limits. It affects HMI ViewJet C-more series and HMI GC-A2 series industrial control systems. Attackers can disrupt operations by overwhelming device resources.
💻 Affected Systems
- HMI ViewJet C-more series
- HMI GC-A2 series
⚠️ 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 device unavailability requiring physical reset or replacement, potentially disrupting industrial processes and causing production downtime.
Likely Case
Temporary service disruption requiring device reboot, causing operational delays in industrial environments.
If Mitigated
Minimal impact with proper network segmentation and monitoring allowing quick detection and response.
🎯 Exploit Status
The vulnerability description suggests straightforward exploitation via resource exhaustion attacks without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisories for specific firmware versions
Vendor Advisory: https://www.electronics.jtekt.co.jp/en/topics/202503207269/ and https://www.electronics.jtekt.co.jp/en/topics/202503207271/
Restart Required: Yes
Instructions:
1. Check current firmware version. 2. Download appropriate firmware update from JTEKT website. 3. Apply firmware update following vendor instructions. 4. Reboot device. 5. Verify update success.
🔧 Temporary Workarounds
Network Segmentation
allIsolate HMI devices in separate network segments with strict firewall rules
Access Control Lists
allImplement network ACLs to restrict access to HMI devices to authorized IPs only
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to HMI devices
- Deploy network monitoring and intrusion detection systems to detect DoS attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against vendor advisories. Devices running unpatched firmware are vulnerable.Check Version:
Check device web interface or use vendor-specific tools to query firmware versionVerify Fix Applied:
Verify firmware version matches patched versions listed in vendor advisories and test device functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual resource consumption patterns
- Multiple connection attempts from single sources
- Device restart logs
Network Indicators:
- High volume of requests to HMI ports
- Traffic patterns suggesting resource exhaustion attempts
SIEM Query:
source_ip:external AND dest_port:HMI_port AND event_count > threshold