CVE-2025-29871
📋 TL;DR
An out-of-bounds read vulnerability in QNAP File Station 5 allows local attackers with administrator privileges to read sensitive memory data. This affects QNAP NAS devices running vulnerable versions of File Station 5. The vulnerability requires local access and administrative credentials to exploit.
💻 Affected Systems
- QNAP File Station 5
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Administrator-level attacker could read sensitive memory contents including passwords, encryption keys, or other confidential data from the File Station process memory space.
Likely Case
Privileged attacker with local access could extract limited sensitive information from memory, potentially enabling further system compromise.
If Mitigated
With proper access controls and least privilege principles, impact is limited as exploitation requires administrative credentials.
🎯 Exploit Status
Exploitation requires local access and administrator credentials. No public exploit code has been reported.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: File Station 5 version 5.5.6.4847 and later
Vendor Advisory: https://www.qnap.com/en/security-advisory/qsa-25-16
Restart Required: Yes
Instructions:
1. Log into QNAP QTS web interface as administrator. 2. Navigate to App Center. 3. Check for updates for File Station 5. 4. Install version 5.5.6.4847 or later. 5. Restart the File Station service or reboot the NAS.
🔧 Temporary Workarounds
Disable File Station 5
allTemporarily disable File Station 5 if immediate patching is not possible
Navigate to App Center > Installed Apps > File Station 5 > Disable
Restrict administrative access
allLimit administrative accounts to only trusted personnel and implement multi-factor authentication
🧯 If You Can't Patch
- Implement strict access controls to limit local administrative access to trusted personnel only
- Disable File Station 5 service if not required for business operations
🔍 How to Verify
Check if Vulnerable:
Check File Station 5 version in QTS App Center. If version is earlier than 5.5.6.4847, system is vulnerable.Check Version:
In QTS web interface: App Center > Installed Apps > File Station 5 > check version numberVerify Fix Applied:
Verify File Station 5 version is 5.5.6.4847 or later in App Center after update.📡 Detection & Monitoring
Log Indicators:
- Unusual memory access patterns in system logs
- Multiple failed authentication attempts followed by successful admin login
Network Indicators:
- Local network connections to File Station service from unexpected sources
SIEM Query:
source="qnap" AND (event_type="authentication" AND user="admin") OR (process="filestation" AND action="memory_access")