CVE-2026-1021
📋 TL;DR
The Police Statistics Database System developed by Gotac contains an arbitrary file upload vulnerability that allows unauthenticated remote attackers to upload malicious files and execute arbitrary code on the server. This affects all deployments of the vulnerable software version.
💻 Affected Systems
- Police Statistics Database System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, ransomware deployment, or use as a foothold for lateral movement within the network.
Likely Case
Attackers upload web shells to establish persistent access, exfiltrate sensitive police data, and potentially disrupt operations.
If Mitigated
If proper file upload validation and authentication are implemented, the attack surface is significantly reduced.
🎯 Exploit Status
The vulnerability requires no authentication and involves simple file upload manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.twcert.org.tw/en/cp-139-10638-0e44b-2.html
Restart Required: Yes
Instructions:
1. Contact Gotac for the latest patched version. 2. Backup system data. 3. Apply the patch following vendor instructions. 4. Restart the application/service. 5. Verify the fix.
🔧 Temporary Workarounds
Implement File Upload Restrictions
allConfigure web server to block uploads of executable file types and implement strict file validation
# Example for Apache: Add to .htaccess
<FilesMatch "\.(php|asp|aspx|jsp|pl|py|sh)$">
Order Allow,Deny
Deny from all
</FilesMatch>
Network Segmentation
allIsolate the database system from internet access and restrict to internal network only
# Configure firewall rules to block external access to the application port
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block file upload requests containing suspicious patterns
- Disable file upload functionality entirely if not required for operations
🔍 How to Verify
Check if Vulnerable:
Attempt to upload a test file (e.g., .txt) to the upload endpoint without authentication. If successful, the system is vulnerable.Check Version:
Check application version through web interface or configuration filesVerify Fix Applied:
After patching, attempt the same upload test - it should be rejected or require proper authentication.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to upload endpoints
- Requests for known web shell files (e.g., shell.php, cmd.aspx)
- Multiple failed authentication attempts followed by successful upload
Network Indicators:
- HTTP POST requests to upload endpoints from external IPs
- Traffic patterns showing file uploads followed by command execution patterns
SIEM Query:
source="web_logs" AND (uri="*upload*" OR uri="*file*" OR method="POST") AND (user_agent="*curl*" OR user_agent="*wget*" OR src_ip NOT IN internal_subnets)