CVE-2025-26469
📋 TL;DR
This vulnerability allows attackers to decrypt credentials stored in registry keys due to incorrect default permissions in MedDream PACS Premium. Attackers can execute malicious scripts to exploit this, potentially compromising sensitive medical imaging data. Healthcare organizations using MedDream PACS Premium 7.3.3.840 are affected.
💻 Affected Systems
- MedDream PACS Premium
📦 What is this software?
Pacs Server by Meddream
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of medical imaging systems, unauthorized access to patient health information (PHI), potential ransomware deployment across hospital networks, and violation of HIPAA regulations.
Likely Case
Credential theft leading to unauthorized access to PACS systems, potential data exfiltration of medical images and patient records, and lateral movement within healthcare networks.
If Mitigated
Limited impact with proper network segmentation, credential rotation, and monitoring in place, though registry access could still expose some credentials.
🎯 Exploit Status
Exploitation requires ability to execute scripts/applications on the target system; local access or remote code execution needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Monitor MedDream vendor website for security updates
2. Apply any available patches immediately
3. Test patches in non-production environment first
🔧 Temporary Workarounds
Restrict Registry Permissions
windowsModify registry key permissions to prevent unauthorized access to configuration keys
regedit.exe (manual configuration required)
Set registry ACLs to restrict access to SYSTEM and authorized administrators only
Credential Rotation
allChange all credentials stored in MedDream configuration
Change database passwords
Update service account credentials
Rotate encryption keys
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MedDream systems from general network traffic
- Deploy application allowlisting to prevent execution of unauthorized scripts and applications
🔍 How to Verify
Check if Vulnerable:
Check MedDream version in application interface or registry: HKEY_LOCAL_MACHINE\SOFTWARE\MedDream\PACS\VersionCheck Version:
reg query "HKLM\SOFTWARE\MedDream\PACS" /v VersionVerify Fix Applied:
Verify registry permissions on configuration keys and confirm no unauthorized access is possible📡 Detection & Monitoring
Log Indicators:
- Unusual registry access events to MedDream keys
- Failed authentication attempts followed by registry queries
- Process creation events for suspicious scripts accessing registry
Network Indicators:
- Unusual outbound connections from MedDream servers
- Traffic patterns indicating data exfiltration
SIEM Query:
EventID=4656 OR EventID=4663 AND ObjectName LIKE "%MedDream%" AND AccessMask IN (0x100, 0x200)