Arbitrary File Upload in Official Document Management System

Executive Summary

CVE-2026-74845 is an Arbitrary File Upload vulnerability in the Official Document Management System by 2100 Technology. It allows authenticated remote attackers to upload and execute web shell backdoors, leading to arbitrary code execution on the server.

Useful 0 Not Useful 0

Detection Guidance

Detecting this vulnerability requires checking for unauthorized file uploads or web shells in the Official Document Management System. Inspect system logs for unusual file uploads, especially executable files or scripts in web-accessible directories. Monitor network traffic for unexpected outbound connections from the server. Use tools like grep to search for recently modified files in upload directories. Example commands: grep -r 'web shell' /var/www/html/, find /var/www/html/ -type f -mtime -7, or check for files with extensions like .php, .jsp in upload folders.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability enables attackers to upload malicious files, execute arbitrary code on the server, and potentially gain full control over the system. It can lead to data breaches, unauthorized access, and system compromise.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and security. Non-compliance may result in legal penalties, fines, and reputational damage.

Useful 0 Not Useful 0

Mitigation Strategies

Immediately update the Official Document Management System to version 5.0.105 or later to patch the vulnerability. If updating is not immediately possible, restrict file upload functionality to only trusted users and file types. Implement strict input validation for file uploads and disable execution permissions for uploaded files. Review and remove any unauthorized files or web shells already present on the system. Monitor for suspicious activity and restrict server access to trusted IPs.

Useful 0 Not Useful 0