CVE-2025-27256
📋 TL;DR
This vulnerability allows attackers to bypass SSH authentication in GE Vernova Enervista UR Setup software, enabling man-in-the-middle attacks. Attackers could intercept or manipulate communications between the application and devices. Organizations using this software for configuring protective relays are affected.
💻 Affected Systems
- GE Vernova Enervista UR Setup
⚠️ 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
Attackers could intercept configuration changes, inject malicious commands, or steal sensitive operational data, potentially leading to equipment misconfiguration, operational disruption, or safety incidents.
Likely Case
Attackers on the same network could intercept communications to monitor configuration changes or inject unauthorized commands during software updates.
If Mitigated
With proper network segmentation and access controls, impact is limited to authorized network segments only.
🎯 Exploit Status
Requires network access and ability to perform man-in-the-middle attacks between the application and target devices.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://www.gevernova.com/grid-solutions/app/DownloadFile.aspx?prod=urfamily&type=21&file=76
Restart Required: No
Instructions:
1. Download the updated Enervista UR Setup software from GE Vernova's official website. 2. Install the update following vendor instructions. 3. Verify SSH authentication is now properly implemented.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Enervista UR Setup workstations and target devices on a dedicated, secured network segment.
VPN or Encrypted Tunnel
allUse VPN or encrypted tunnels for all communications between Enervista UR Setup and target devices.
🧯 If You Can't Patch
- Implement strict network access controls to limit which systems can communicate with Enervista UR Setup workstations.
- Monitor network traffic for unauthorized SSH connections or man-in-the-middle attack indicators.
🔍 How to Verify
Check if Vulnerable:
Check if Enervista UR Setup version is older than the patched version specified in vendor advisory.Check Version:
Check application version through Help > About in Enervista UR Setup interface.Verify Fix Applied:
Verify SSH connections now require proper authentication and cannot be intercepted via man-in-the-middle attacks.📡 Detection & Monitoring
Log Indicators:
- Unexpected SSH connection attempts
- Failed authentication attempts from unexpected sources
Network Indicators:
- Unencrypted SSH traffic
- SSH connections without proper authentication handshake
SIEM Query:
source="network_traffic" protocol="ssh" AND (auth_failed="true" OR auth_method="none")