CVE-2025-46359
📋 TL;DR
A path traversal vulnerability in PowerCMS backup/restore feature allows product administrators to execute arbitrary code by restoring malicious backup files. This affects multiple PowerCMS versions and requires administrator privileges to exploit.
💻 Affected Systems
- PowerCMS
📦 What is this software?
Powercms by Alfasado
Powercms by Alfasado
Powercms by Alfasado
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with remote code execution leading to data theft, ransomware deployment, or complete system takeover.
Likely Case
Unauthorized file system access leading to sensitive data exposure, privilege escalation, or backdoor installation.
If Mitigated
Limited impact if proper access controls and file validation are implemented, though administrative compromise remains possible.
🎯 Exploit Status
Exploitation requires authenticated administrator access to the backup/restore feature.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: PowerCMS 6.7.1, 5.3.1, 4.6.1 (as per vendor advisory)
Vendor Advisory: https://www.powercms.jp/news/release-powercms-671-531-461.html
Restart Required: Yes
Instructions:
1. Download latest patched version from PowerCMS website. 2. Backup current installation. 3. Replace files with patched version. 4. Restart web server and application services.
🔧 Temporary Workarounds
Disable Backup/Restore Feature
allTemporarily disable backup and restore functionality until patching is complete.
# Remove or restrict access to backup/restore modules in PowerCMS configuration
Restrict Administrator Access
allLimit administrative access to trusted users only and implement multi-factor authentication.
# Configure access controls in PowerCMS admin panel
🧯 If You Can't Patch
- Implement strict file upload validation for backup files
- Monitor and audit all backup/restore activities with alerting
🔍 How to Verify
Check if Vulnerable:
Check PowerCMS version against affected versions listed in vendor advisory.Check Version:
# Check PowerCMS version in admin panel or configuration filesVerify Fix Applied:
Verify installed version matches patched versions (6.7.1, 5.3.1, or 4.6.1).📡 Detection & Monitoring
Log Indicators:
- Unusual backup file uploads
- Restore operations with non-standard file paths
- Administrator account anomalies
Network Indicators:
- Unexpected outbound connections from PowerCMS server
- File uploads to backup endpoints
SIEM Query:
source="powercms" AND (event="backup_restore" OR event="file_upload") AND file_path CONTAINS ".."