CVE-2025-0542
📋 TL;DR
This vulnerability allows local unprivileged attackers to escalate privileges to SYSTEM level on G DATA Management Server installations. Attackers can place a malicious ZIP archive in a writable directory that gets unpacked with SYSTEM privileges, enabling arbitrary file writes. Only local attackers can exploit this vulnerability.
💻 Affected Systems
- G DATA Management Server
⚠️ 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
Full SYSTEM compromise allowing complete control over the server, installation of persistent backdoors, credential theft, and lateral movement within the network.
Likely Case
Local privilege escalation to SYSTEM allowing attackers to install malware, modify system files, or disable security controls on the affected server.
If Mitigated
Limited impact if proper access controls restrict local user accounts and file system permissions are properly configured.
🎯 Exploit Status
Requires local access and ability to write to specific directories. Exploitation involves creating a specially crafted ZIP archive.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check G DATA vendor advisory for specific version
Vendor Advisory: https://www.gdatasoftware.com/security
Restart Required: No
Instructions:
1. Check G DATA vendor advisory for patched version. 2. Update G DATA Management Server to the latest version. 3. Verify the update completed successfully.
🔧 Temporary Workarounds
Restrict directory permissions
windowsRemove write permissions for non-administrative users from globally writable directories used by the update mechanism
icacls "C:\ProgramData\G DATA\ManagementServer\temp" /inheritance:r /grant:r "SYSTEM:(OI)(CI)F" "Administrators:(OI)(CI)F" /deny "Users:(OI)(CI)(W)"
🧯 If You Can't Patch
- Implement strict access controls to limit local user accounts on affected servers
- Monitor file system activity in temporary directories used by G DATA Management Server
🔍 How to Verify
Check if Vulnerable:
Check G DATA Management Server version against vendor advisory. Review directory permissions on temporary update directories.Check Version:
Check G DATA Management Server console or installation directory for version informationVerify Fix Applied:
Verify G DATA Management Server is updated to patched version. Confirm directory permissions restrict non-admin write access.📡 Detection & Monitoring
Log Indicators:
- Unusual file writes in G DATA temporary directories
- Suspicious process creation from G DATA update components
- Failed privilege escalation attempts
Network Indicators:
- None - this is a local exploit
SIEM Query:
Process creation where parent process contains 'G DATA' and child process is 'cmd.exe' or 'powershell.exe' with SYSTEM privileges