CVE-2025-0691
📋 TL;DR
This vulnerability allows authenticated users in Devolutions Server to bypass client-side validation and edit permissions they shouldn't have access to. It affects all Devolutions Server installations running version 2025.1.10.0 or earlier. Attackers need valid credentials to exploit this flaw.
💻 Affected Systems
- Devolutions Server
📦 What is this software?
Devolutions Server by Devolutions
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could escalate privileges to administrative level, modify permissions for other users, access sensitive data, or disrupt operations by changing critical permissions.
Likely Case
Malicious insider or compromised account could modify permissions to gain unauthorized access to sensitive resources or data within the Devolutions Server environment.
If Mitigated
With proper network segmentation and least privilege access, impact would be limited to the specific Devolutions Server instance and its managed resources.
🎯 Exploit Status
Exploitation requires authenticated access but bypasses client-side validation, making it relatively simple for authenticated attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.1.11.0 or later
Vendor Advisory: https://devolutions.net/security/advisories/DEVO-2025-0011/
Restart Required: Yes
Instructions:
1. Download Devolutions Server 2025.1.11.0 or later from official sources. 2. Backup current configuration and data. 3. Run the installer to upgrade. 4. Restart Devolutions Server services.
🔧 Temporary Workarounds
Temporary Access Restriction
allLimit user access to only necessary permissions and implement additional server-side validation
🧯 If You Can't Patch
- Implement strict least privilege access controls and audit all permission changes
- Deploy network segmentation to isolate Devolutions Server from critical systems
🔍 How to Verify
Check if Vulnerable:
Check Devolutions Server version in web interface or configuration files. If version is 2025.1.10.0 or earlier, system is vulnerable.Check Version:
Check web interface dashboard or examine configuration files for version informationVerify Fix Applied:
Verify version is 2025.1.11.0 or later and test that authenticated users cannot bypass permission validation.📡 Detection & Monitoring
Log Indicators:
- Unexpected permission modifications
- Failed permission validation attempts followed by successful changes
- User accounts accessing resources outside their normal permissions
Network Indicators:
- Unusual patterns of permission-related API calls from authenticated users
SIEM Query:
source="devolutions-server" AND (event_type="permission_change" OR event_type="access_violation")