CVE-2026-2038
📋 TL;DR
This vulnerability allows remote attackers to bypass authentication on GFI Archiver installations without requiring credentials. The flaw exists in the MArc.Core.Remoting.exe process configuration, enabling unauthorized access to system functionality. All GFI Archiver installations with the vulnerable configuration are affected.
💻 Affected Systems
- GFI Archiver
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote attackers can bypass authentication and combine with other vulnerabilities to execute arbitrary code with SYSTEM privileges, leading to complete system compromise.
Likely Case
Attackers gain unauthorized access to archived data, sensitive information, and potentially escalate privileges within the GFI Archiver system.
If Mitigated
With proper network segmentation and access controls, impact is limited to unauthorized access to archived data only.
🎯 Exploit Status
Authentication bypass requires no credentials, making exploitation straightforward for attackers with network access
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GFI Archiver vendor advisory for specific patched version
Vendor Advisory: https://www.gfi.com/support/security-advisories
Restart Required: Yes
Instructions:
1. Check GFI Archiver vendor advisory for patch details
2. Download and apply the latest security update
3. Restart GFI Archiver services
4. Verify patch application
🔧 Temporary Workarounds
Network Segmentation
windowsRestrict access to port 8017/TCP to trusted networks only
Windows Firewall: New-NetFirewallRule -DisplayName "Block GFI Archiver Port" -Direction Inbound -LocalPort 8017 -Protocol TCP -Action Block
Service Disablement
windowsTemporarily disable MArc.Core.Remoting.exe service if not required
sc stop "GFI Archiver MArc.Core"
sc config "GFI Archiver MArc.Core" start= disabled
🧯 If You Can't Patch
- Implement strict network access controls to limit access to port 8017/TCP to authorized IP addresses only
- Monitor network traffic on port 8017/TCP for unauthorized access attempts and implement intrusion detection rules
🔍 How to Verify
Check if Vulnerable:
Check if MArc.Core.Remoting.exe is running and listening on port 8017: netstat -ano | findstr :8017Check Version:
Check GFI Archiver About dialog or installation directory version informationVerify Fix Applied:
Verify patch version matches vendor advisory and test authentication requirements for MArc.Core.Remoting.exe endpoints📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to MArc.Core.Remoting.exe
- Authentication bypass events in GFI Archiver logs
- Unexpected process execution following port 8017 access
Network Indicators:
- Unusual traffic patterns to port 8017/TCP
- Authentication bypass attempts to MArc.Core.Remoting.exe endpoints
SIEM Query:
source="GFI Archiver" AND (event_type="authentication_failure" OR event_type="unauthorized_access") AND dest_port=8017