CVE-2025-29306
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on FoxCMS v1.2.5 systems through the case display page in index.html. It affects all deployments of FoxCMS v1.2.5 that have the vulnerable component enabled. Attackers can gain full control of affected systems without authentication.
💻 Affected Systems
- FoxCMS
📦 What is this software?
Foxcms by Foxcms
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, ransomware deployment, lateral movement within networks, and persistent backdoor installation.
Likely Case
Web server compromise leading to website defacement, data exfiltration, and use as a foothold for further attacks.
If Mitigated
Limited impact with proper network segmentation, WAF protection, and minimal privileges, though code execution would still be possible.
🎯 Exploit Status
Public exploit code is available on GitHub, making this easily weaponizable by attackers with minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Disable case display functionality
allRemove or disable the vulnerable index.html case display page component
mv /path/to/foxcms/index.html /path/to/foxcms/index.html.disabled
Implement WAF rules
allAdd web application firewall rules to block malicious requests to the case display endpoint
# Example mod_security rule: SecRule REQUEST_URI "@contains case" "id:1001,deny,status:403"
🧯 If You Can't Patch
- Network segmentation to isolate FoxCMS from critical systems
- Implement strict outbound firewall rules to prevent data exfiltration
🔍 How to Verify
Check if Vulnerable:
Check if FoxCMS version is 1.2.5 and the case display page is accessible at /index.htmlCheck Version:
Check FoxCMS configuration files or admin panel for version informationVerify Fix Applied:
Verify the case display page returns 404 or is inaccessible after implementing workarounds📡 Detection & Monitoring
Log Indicators:
- Unusual POST/GET requests to index.html with case parameters
- Web server errors containing suspicious payloads
Network Indicators:
- Outbound connections from web server to unknown IPs
- Unusual traffic patterns from FoxCMS server
SIEM Query:
source="web_logs" AND (uri="*index.html*case*" OR method="POST" AND uri="*index.html*")