CVE-2025-48393
📋 TL;DR
This CVE describes an insecure server identity check mechanism in Eaton G4 PDU firmware upgrades via command shell, allowing man-in-the-middle attacks. Attackers could intercept and modify firmware updates to inject malicious code. Organizations using affected Eaton G4 PDU devices are vulnerable.
💻 Affected Systems
- Eaton G4 PDU
⚠️ 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 perform a man-in-the-middle attack to deliver malicious firmware, potentially gaining full control of the PDU, disrupting power management, or using it as a foothold into the network.
Likely Case
An attacker intercepts firmware updates to install backdoored firmware, enabling persistent access to the PDU for monitoring or manipulation of connected devices.
If Mitigated
With proper network segmentation and monitoring, impact is limited to the PDU itself, though it could still affect power management for connected equipment.
🎯 Exploit Status
Exploitation requires man-in-the-middle position during firmware upgrade; no public exploit code known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest firmware version available on Eaton download center
Vendor Advisory: https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/etn-va-2025-1002.pdf
Restart Required: Yes
Instructions:
1. Download latest firmware from Eaton download center. 2. Follow Eaton's firmware upgrade procedures. 3. Verify successful installation.
🔧 Temporary Workarounds
Disable remote firmware upgrades
allPrevent firmware upgrades via command shell to eliminate attack vector
Use secure network channels
allEnsure firmware upgrades only occur over isolated, trusted networks
🧯 If You Can't Patch
- Isolate PDU management interfaces to trusted networks only
- Monitor network traffic for unauthorized firmware upgrade attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version against latest available on Eaton download center; if not latest, assume vulnerableCheck Version:
Check via PDU web interface or CLI (specific command varies by model)Verify Fix Applied:
Verify firmware version matches latest from Eaton download center and test firmware upgrade functionality📡 Detection & Monitoring
Log Indicators:
- Unexpected firmware upgrade attempts
- Failed firmware validations
- Unusual command shell activity
Network Indicators:
- Unencrypted firmware transfer traffic
- Man-in-the-middle patterns during upgrade process
SIEM Query:
Search for PDU firmware upgrade events outside maintenance windows