CVE-2025-10993
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code through template management functionality in MuYuCMS. It affects all installations of MuYuCMS up to version 2.7. Attackers can exploit this flaw to gain unauthorized access and control over affected systems.
💻 Affected Systems
- MuYuCMS
📦 What is this software?
Muyucms by Muyucms
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, ransomware deployment, or persistent backdoor installation
Likely Case
Unauthorized administrative access leading to website defacement, data manipulation, or credential theft
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only affecting the CMS instance
🎯 Exploit Status
Requires access to admin.php endpoint; likely requires some level of authentication or access to the admin interface
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.7 (check vendor for specific version)
Vendor Advisory: https://gitee.com/MuYuCMS/MuYuCMS/issues/ICXVCE
Restart Required: No
Instructions:
1. Check current MuYuCMS version. 2. Update to latest version from official repository. 3. Verify /admin.php endpoint is properly secured. 4. Review template management permissions.
🔧 Temporary Workarounds
Restrict admin.php access
allLimit access to the vulnerable endpoint using network controls
# Use firewall rules to restrict access to /admin.php
# Example: iptables -A INPUT -p tcp --dport 80 -m string --string "/admin.php" --algo bm -j DROP
Disable template management
allTemporarily disable template management functionality if not required
# Rename or remove template management files
# Example: mv /path/to/template_management.php /path/to/template_management.php.disabled
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MuYuCMS instances
- Deploy web application firewall with code injection detection rules
🔍 How to Verify
Check if Vulnerable:
Check MuYuCMS version; if version ≤ 2.7, system is vulnerable. Review /admin.php access logs for suspicious template management activity.Check Version:
Check MuYuCMS configuration files or admin panel for version informationVerify Fix Applied:
Verify MuYuCMS version is > 2.7. Test template management functionality for code injection attempts. Review patch notes from vendor.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /admin.php with template parameters
- Multiple failed authentication attempts followed by template management requests
- Unexpected file creation or modification in template directories
Network Indicators:
- HTTP requests containing suspicious code patterns in template parameters
- Unusual outbound connections from MuYuCMS server
SIEM Query:
source="web_logs" AND uri="/admin.php" AND (method="POST" OR parameters CONTAINS "template")