CVE-2025-1193
📋 TL;DR
CVE-2025-1193 is a certificate validation vulnerability in Devolutions Remote Desktop Manager that allows man-in-the-middle attacks. Attackers can intercept and modify encrypted communications by presenting certificates for different hosts. This affects Windows users running Remote Desktop Manager version 2024.3.19 and earlier.
💻 Affected Systems
- Devolutions Remote Desktop Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of sensitive remote desktop credentials and session data, leading to lateral movement and data exfiltration.
Likely Case
Interception of administrative credentials and session data for targeted systems accessed through the manager.
If Mitigated
Limited impact if network segmentation prevents MITM positioning and certificate pinning is enforced.
🎯 Exploit Status
Requires network positioning for MITM attack and ability to present fraudulent certificates.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.3.20 or later
Vendor Advisory: https://devolutions.net/security/advisories/DEVO-2025-0001/
Restart Required: No
Instructions:
1. Open Remote Desktop Manager. 2. Go to Help > Check for Updates. 3. Install version 2024.3.20 or later. 4. Verify update completed successfully.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Remote Desktop Manager traffic to trusted networks to reduce MITM opportunities.
Certificate Pinning
allImplement certificate pinning for critical connections if supported by your environment.
🧯 If You Can't Patch
- Restrict Remote Desktop Manager to internal networks only with strict firewall rules.
- Monitor for unusual certificate validation failures in network logs.
🔍 How to Verify
Check if Vulnerable:
Check Help > About in Remote Desktop Manager. If version is 2024.3.19 or earlier, you are vulnerable.Check Version:
Not applicable - check via GUI in Help > AboutVerify Fix Applied:
Confirm version is 2024.3.20 or later in Help > About.📡 Detection & Monitoring
Log Indicators:
- Certificate validation failures for expected hosts
- Unexpected certificate authorities in TLS handshakes
Network Indicators:
- TLS connections with mismatched hostnames in certificates
- Unusual MITM proxy activity on network segments with Remote Desktop Manager
SIEM Query:
source="rdm_logs" AND (event="certificate_validation_failed" OR event="tls_handshake_error")