CVE-2025-62849
📋 TL;DR
This SQL injection vulnerability in QNAP operating systems allows remote attackers to execute arbitrary SQL commands. If exploited, attackers could execute unauthorized code or commands on affected QNAP devices. All users running vulnerable QNAP OS versions are affected.
💻 Affected Systems
- QNAP QTS
- QNAP QuTS hero
📦 What is this software?
Qts by Qnap
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⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing remote code execution, data theft, ransomware deployment, and persistent backdoor installation.
Likely Case
Database compromise leading to data exfiltration, privilege escalation, and lateral movement within the network.
If Mitigated
Limited impact with proper network segmentation, but still potential for data exposure if database access is achieved.
🎯 Exploit Status
SQL injection vulnerabilities typically have low exploitation complexity. The CVSS 9.8 score suggests unauthenticated remote exploitation is possible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: QTS 5.2.7.3297 build 20251024 or later, QuTS hero h5.2.7.3297 build 20251024 or later, QuTS hero h5.3.1.3292 build 20251024 or later
Vendor Advisory: https://www.qnap.com/en/security-advisory/qsa-25-45
Restart Required: Yes
Instructions:
1. Log into QNAP device admin interface. 2. Navigate to Control Panel > System > Firmware Update. 3. Check for updates and install the latest firmware. 4. Reboot the device after installation completes.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to QNAP devices to only trusted internal networks
Configure firewall rules to block external access to QNAP management interfaces
Application Firewall Rules
allImplement WAF rules to block SQL injection patterns
Add WAF rules to block common SQL injection patterns (UNION SELECT, OR 1=1, etc.)
🧯 If You Can't Patch
- Immediately isolate affected QNAP devices from internet access
- Implement strict network segmentation and monitor for suspicious database queries
🔍 How to Verify
Check if Vulnerable:
Check QNAP firmware version in Control Panel > System > Firmware UpdateCheck Version:
ssh admin@qnap-ip 'cat /etc/config/uLinux.conf | grep version'Verify Fix Applied:
Verify firmware version matches or exceeds patched versions listed in advisory📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in application logs
- Multiple failed login attempts followed by SQL errors
- Database queries from unexpected IP addresses
Network Indicators:
- Unusual outbound connections from QNAP device
- SQL error messages in HTTP responses
- Unexpected database port connections
SIEM Query:
source="qnap_logs" AND ("sql" OR "database") AND ("error" OR "injection" OR "union select")