CVE-2025-2280
📋 TL;DR
This vulnerability allows authenticated users in Devolutions Server to bypass browser extension restrictions, potentially enabling malicious browser extensions to interact with the application. It affects all authenticated users of Devolutions Server 2024.3.4.0 and earlier versions.
💻 Affected Systems
- Devolutions Server
📦 What is this software?
Devolutions Server by Devolutions
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could deploy malicious browser extensions that steal credentials, intercept sensitive data, or perform unauthorized actions within the Devolutions Server interface.
Likely Case
Malicious users or compromised accounts could install browser extensions that bypass security controls to exfiltrate sensitive information or manipulate the application.
If Mitigated
With proper access controls and monitoring, the impact is limited to potential data exposure from compromised accounts rather than system takeover.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.3.5.0 or later
Vendor Advisory: https://devolutions.net/security/advisories/DEVO-2025-0004/
Restart Required: Yes
Instructions:
1. Download Devolutions Server 2024.3.5.0 or later from the Devolutions website. 2. Backup your current installation. 3. Run the installer to upgrade. 4. Restart the Devolutions Server service.
🔧 Temporary Workarounds
Restrict Browser Extension Installation
allImplement group policies or endpoint controls to restrict browser extension installation for users accessing Devolutions Server.
Enhanced Authentication Controls
allImplement multi-factor authentication and strict access controls to reduce risk from compromised accounts.
🧯 If You Can't Patch
- Implement strict browser extension whitelisting policies for all users accessing Devolutions Server.
- Increase monitoring of user activity and browser extension installations for Devolutions Server users.
🔍 How to Verify
Check if Vulnerable:
Check Devolutions Server version in the web interface under Help > About or via the server administration console.Check Version:
In Devolutions Server web interface: Help > AboutVerify Fix Applied:
Verify the version is 2024.3.5.0 or later and test that browser extension restrictions are properly enforced.📡 Detection & Monitoring
Log Indicators:
- Unusual browser extension installation events
- Failed extension restriction attempts
- Multiple authentication attempts from same user
Network Indicators:
- Unusual outbound connections from browsers accessing Devolutions Server
- Traffic patterns suggesting data exfiltration
SIEM Query:
source="devolutions-server" AND (event_type="extension_install" OR event_type="auth_bypass_attempt")